In MATH we trust

Page 3 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: ebaycj
Originally posted by: MagnusTheBrewer
The problem with alowing a logical construct (math) to become a religion/way of life is that the world is not a logical place and interpreting the world through a strictly logical viewpoint will only doom us to disappointment at best and war at worst.


See now this is interesting...

That is interesting
 

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: sdifox
Originally posted by: Mr Pepper
Medicine, the calendar, our economy, our power grids, our water supplies... etc. are all controlled and governed by the math. The one language all humans across the globe can speak in unity.

Math is simply an organized system by which we can systematically address and handle everyday tasks in life using logic and reason. It seems to be one of the staples of what separates us from the beasts.

So my question is what are the limitations of our mathematical systems? They are all man made, and thus seem to inherit some of our deficiencies, or our limitations. We like to think that we have it all mapped out on paper, but inevitably, something happens or comes along to prove our theories wrong.

For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity. Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.

I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together. Besides a flawed system of units and measures, we live in a world that is not constant, and not suitable for environmentally controlled application of these already flawed units and measures.

Just thinking out loud today..

I guess you have never heard of fractions and significant digit? First of all, the world is analogue, so no finite measuring system will work to the infini-th precision. That is your whole argument? What exactly are you looking for?

Thanks,

That does bring up an interesting point. Analogue vs. digital could be helpful to folks who are having a hard time grasping the limitations of a math-centered world. The benefit of digital systems are that they are 100% reproducible while analogue systems are always unique. Kind of like people.

I do understand the value and use of significant digits, although more trouble came in civil engineering (English) when we had to throw everything we had learned about sig-digs for metric physics out the window.

I do understand the concept though and I know that machine work "for example" only needs to be accurate within the constraints of the material/system that it's intended for.

I am not saying that math is useless. I'm just asking the question, "is there a better way?"
 

So

Lifer
Jul 2, 2001
25,923
17
81
Originally posted by: Mr Pepper
Originally posted by: ebaycj
Originally posted by: MagnusTheBrewer
The problem with alowing a logical construct (math) to become a religion/way of life is that the world is not a logical place and interpreting the world through a strictly logical viewpoint will only doom us to disappointment at best and war at worst.


See now this is interesting...

That is interesting

No, life IS strictly logical, people act in irrational but deterministic ways. Just because there is a margin of error doesn't make math a bad model.
 

So

Lifer
Jul 2, 2001
25,923
17
81
Originally posted by: Mr Pepper
Originally posted by: sdifox
Originally posted by: Mr Pepper
Medicine, the calendar, our economy, our power grids, our water supplies... etc. are all controlled and governed by the math. The one language all humans across the globe can speak in unity.

Math is simply an organized system by which we can systematically address and handle everyday tasks in life using logic and reason. It seems to be one of the staples of what separates us from the beasts.

So my question is what are the limitations of our mathematical systems? They are all man made, and thus seem to inherit some of our deficiencies, or our limitations. We like to think that we have it all mapped out on paper, but inevitably, something happens or comes along to prove our theories wrong.

For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity. Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.

I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together. Besides a flawed system of units and measures, we live in a world that is not constant, and not suitable for environmentally controlled application of these already flawed units and measures.

Just thinking out loud today..

I guess you have never heard of fractions and significant digit? First of all, the world is analogue, so no finite measuring system will work to the infini-th precision. That is your whole argument? What exactly are you looking for?

Thanks,

That does bring up an interesting point. Analogue vs. digital could be helpful to folks who are having a hard time grasping the limitations of a math-centered world. The benefit of digital systems are that they are 100% reproducible while analogue systems are always unique. Kind of like people.

I do understand the value and use of significant digits, although more trouble came in civil engineering (English) when we had to throw everything we had learned about sig-digs for metric physics out the window.

I do understand the concept though and I know the machine work "for example" only needs to be accurate within the constraints of the material/system that it's intended for.

I am not saying that math is useless. I'm just asking the question, "is there a better way?"

You seem to be obsessed with the common use decimal (base 10) system. Just because the math you are familiar with seems "coarse" doesn't mean that math is inaccurate, just that you lack education.
 

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: So
Originally posted by: Mr Pepper
Originally posted by: sdifox
Originally posted by: Mr Pepper
Medicine, the calendar, our economy, our power grids, our water supplies... etc. are all controlled and governed by the math. The one language all humans across the globe can speak in unity.

Math is simply an organized system by which we can systematically address and handle everyday tasks in life using logic and reason. It seems to be one of the staples of what separates us from the beasts.

So my question is what are the limitations of our mathematical systems? They are all man made, and thus seem to inherit some of our deficiencies, or our limitations. We like to think that we have it all mapped out on paper, but inevitably, something happens or comes along to prove our theories wrong.

For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity. Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.

I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together. Besides a flawed system of units and measures, we live in a world that is not constant, and not suitable for environmentally controlled application of these already flawed units and measures.

Just thinking out loud today..

I guess you have never heard of fractions and significant digit? First of all, the world is analogue, so no finite measuring system will work to the infini-th precision. That is your whole argument? What exactly are you looking for?

Thanks,

That does bring up an interesting point. Analogue vs. digital could be helpful to folks who are having a hard time grasping the limitations of a math-centered world. The benefit of digital systems are that they are 100% reproducible while analogue systems are always unique. Kind of like people.

I do understand the value and use of significant digits, although more trouble came in civil engineering (English) when we had to throw everything we had learned about sig-digs for metric physics out the window.

I do understand the concept though and I know the machine work "for example" only needs to be accurate within the constraints of the material/system that it's intended for.

I am not saying that math is useless. I'm just asking the question, "is there a better way?"

You seem to be obsessed with the common use decimal (base 10) system. Just because the math you are familiar with seems "coarse" doesn't mean that math is inaccurate, just that you lack education.

Fair enough,

I don't claim to be an expert. My example earlier used division and significant digits. The point was to prove that math is not "perfect" at the most basic of building blocks. As far as units of 10, the same could be achieved with any other unit. I do believe our math system is based on what we observe in our physical world however. No question there.

 

D1gger

Diamond Member
Oct 3, 2004
5,411
2
76
what you?ve just said is one of the most insanely idiotic things I have ever read. At no point in your rambling, incoherent statement were you even close to anything that could be considered a rational thought. Everyone in this thread is now dumber for having read it.

I award you no points, and may God have mercy on your soul.
 

Cooler

Diamond Member
Mar 31, 2005
3,835
0
0
The whole math system is based on idea of true and false. if logic every is disproved everything will fall apart.
 

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: dullard
Originally posted by: DougK62
WTF are you talking about with infinity? What you said is completely wrong.
His "logic":
A) 1 divided by 2 = 0.500000000000 with infinite repeating zeros.
B) The number, 0.500000000000 with infinite repeating zeros, doesn't exist.
C) Thus, 0.500000000000 with infinite repeating zeros * 2 does not equal 1.

That is rock solid logic if only (B) was true.

Thanks for the excellent example.

I think the problem with our conventional math is that often we can see it work in the physical world, but can not perfectly explain "in mathematical language" what is happening.

To borrow from Richard Hamming:

"Humans create and select the mathematics that fit a situation. The mathematics at hand does not always work. For example, when mere scalars proved awkward for understanding forces, first vectors, then tensors, were invented."

 

YoungGun21

Platinum Member
Aug 17, 2006
2,546
1
81
I suppose you have something better?

I'd say if anything we need to more MORE faith in math and the sciences in stead of politics and religion.
 

jimmypage13

Senior member
Jul 30, 2005
287
0
0
Originally posted by: Mr Pepper
Medicine, the calendar, our economy, our power grids, our water supplies... etc. are all controlled and governed by the math. The one language all humans across the globe can speak in unity.

Math is simply an organized system by which we can systematically address and handle everyday tasks in life using logic and reason. It seems to be one of the staples of what separates us from the beasts.

So my question is what are the limitations of our mathematical systems? They are all man made, and thus seem to inherit some of our deficiencies, or our limitations. We like to think that we have it all mapped out on paper, but inevitably, something happens or comes along to prove our theories wrong.

For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity. Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.

I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together. Besides a flawed system of units and measures, we live in a world that is not constant, and not suitable for environmentally controlled application of these already flawed units and measures.

Just thinking out loud today..

its true its true, but, In Rock I Trust
 

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: jimmypage13
Originally posted by: Mr Pepper
Medicine, the calendar, our economy, our power grids, our water supplies... etc. are all controlled and governed by the math. The one language all humans across the globe can speak in unity.

Math is simply an organized system by which we can systematically address and handle everyday tasks in life using logic and reason. It seems to be one of the staples of what separates us from the beasts.

So my question is what are the limitations of our mathematical systems? They are all man made, and thus seem to inherit some of our deficiencies, or our limitations. We like to think that we have it all mapped out on paper, but inevitably, something happens or comes along to prove our theories wrong.

For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity. Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.

I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together. Besides a flawed system of units and measures, we live in a world that is not constant, and not suitable for environmentally controlled application of these already flawed units and measures.

Just thinking out loud today..

its true its true, but, In Rock I Trust

Haha,

I think you might be on to something
 

TheRyuu

Diamond Member
Dec 3, 2005
5,479
14
81
Just to throw it out there, .99999999999 with a infinite number of 9's = 1

Strange isn't it??

Although this might have already been said
 

Zenmervolt

Elite member
Oct 22, 2000
24,514
36
91
Originally posted by: Mr Pepper
For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity.
No, we don't. We get 10/3, a fraction. We simply use 3.33 repeating as a more convenient decimal representation of the same number. If we know that the decimal is indeed repeating infinitely, then we know the fraction that it represents. This is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.
It certainly does exist, as shown above.

Originally posted by: Mr Pepper
I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together.
It's not "close enough" it's exactly right. The map is not the territory.

When you write the letter "t", does it look _exactly_ the same as when your father writes that letter? No, it doesn't, but both symbols represent the same letter. Likewise, 3.33 repeating and 10/3 represent the same number. They are equal. Again, this is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
I do understand the concept though and I know that machine work "for example" only needs to be accurate within the constraints of the material/system that it's intended for.
Machine work is limited by the precision capabilities of the machining process, not by any limitations of the mathematical system. It's related to the matter of being physically able to match a specification within a set of tolerences and not to the matter of being able to measure the original specification. It's a completely different scenario.

Originally posted by: Mr Pepper
I am not saying that math is useless. I'm just asking the question, "is there a better way?"
The "better way" is to understand that math is not a prescriptive system. Rather, mathematics is a method of describing and communicating relationships and interdependencies. Mathematical formulae are discovered, not created. Mathematics is nothing more or less than the study of the underlying patterns that shape our world. As we learn more, we see more of these patterns and learn better how to describe them in the language of mathematics, but we (mankind) do NOT "invent" math. Math was, is, and forever will be.

ZV
 

MagnusTheBrewer

IN MEMORIAM
Jun 19, 2004
24,122
1,594
126
Originally posted by: Zenmervolt
Originally posted by: Mr Pepper
For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity.
No, we don't. We get 10/3, a fraction. We simply use 3.33 repeating as a more convenient decimal representation of the same number. If we know that the decimal is indeed repeating infinitely, then we know the fraction that it represents. This is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.
It certainly does exist, as shown above.

Originally posted by: Mr Pepper
I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together.
It's not "close enough" it's exactly right. The map is not the territory.

When you write the letter "t", does it look _exactly_ the same as when your father writes that letter? No, it doesn't, but both symbols represent the same letter. Likewise, 3.33 repeating and 10/3 represent the same number. They are equal. Again, this is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
I do understand the concept though and I know that machine work "for example" only needs to be accurate within the constraints of the material/system that it's intended for.
Machine work is limited by the precision capabilities of the machining process, not by any limitations of the mathematical system. It's related to the matter of being physically able to match a specification within a set of tolerences and not to the matter of being able to measure the original specification. It's a completely different scenario.

Originally posted by: Mr Pepper
I am not saying that math is useless. I'm just asking the question, "is there a better way?"
The "better way" is to understand that math is not a prescriptive system. Rather, mathematics is a method of describing and communicating relationships and interdependencies. Mathematical formulae are discovered, not created. Mathematics is nothing more or less than the study of the underlying patterns that shape our world. As we learn more, we see more of these patterns and learn better how to describe them in the language of mathematics, but we (mankind) do NOT "invent" math. Math was, is, and forever will be.

ZV

You left out the 'Amen.'

I say again, while no one is denying math is a useful tool, viewing the world strictly thru a mathmatical/logical perspective will doom you to disappointment and will almost certainly earn the derision and persecution of the world. The reason is simple, the world (indeed the guy two houses over) views the problem, not to mention the order of operations differently.

There is nothing inherently virtuous about proselitizing logic as the correct viewpoint for inteligent people everywhere. The short sightedness of such people viewing the world in black and white has given rise to as many conflicts as accepted religions ever have. You can 'prove' your viewpoint mathmatically/logically all you want but, it will not alter the fact that just as many people will vilify every thought and idea you present in such a manner.

I have noticed that anyone questioning the rightness/validity of a purely logical view of life and the cosmos is subjected to ridicule and rejection by the scientific sorts on a level which rivals the most rabid theologist. I wonder why the logical thinker is unable/unwilling to evaluate other world views by the rules/logic which are central to those differing beliefs?
 

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: Zenmervolt
Originally posted by: Mr Pepper
For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity.
No, we don't. We get 10/3, a fraction. We simply use 3.33 repeating as a more convenient decimal representation of the same number. If we know that the decimal is indeed repeating infinitely, then we know the fraction that it represents. This is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.
It certainly does exist, as shown above.

Originally posted by: Mr Pepper
I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together.
It's not "close enough" it's exactly right. The map is not the territory.

When you write the letter "t", does it look _exactly_ the same as when your father writes that letter? No, it doesn't, but both symbols represent the same letter. Likewise, 3.33 repeating and 10/3 represent the same number. They are equal. Again, this is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
I do understand the concept though and I know that machine work "for example" only needs to be accurate within the constraints of the material/system that it's intended for.
Machine work is limited by the precision capabilities of the machining process, not by any limitations of the mathematical system. It's related to the matter of being physically able to match a specification within a set of tolerences and not to the matter of being able to measure the original specification. It's a completely different scenario.

Originally posted by: Mr Pepper
I am not saying that math is useless. I'm just asking the question, "is there a better way?"
The "better way" is to understand that math is not a prescriptive system. Rather, mathematics is a method of describing and communicating relationships and interdependencies. Mathematical formulae are discovered, not created. Mathematics is nothing more or less than the study of the underlying patterns that shape our world. As we learn more, we see more of these patterns and learn better how to describe them in the language of mathematics, but we (mankind) do NOT "invent" math. Math was, is, and forever will be.

ZV

Thanks,

I appreciate your concise and well considered observations. I respect them & you, and enjoy these kinds of conversations.

The "rules" are so set in many of our minds that we sometimes can't even understand why there could be any question.

Yes, I understand that 3.33.... represents 3 and 1/3. Perfectly. I know this is elementary. I know that you can take a "pizza" and cut it into sixths, eighths.. whatever. Fractions are our way of dealing with a flaw in our system (yes this is my opinion), that I don't think is difficult to understand. We are finite creatures trying to deal with infinite numbers.

A very simple check to see if 9 / 3 = 3 is to multiply 3 * 3. Now do the same thing with 10 / 3. Best we can do is say 3 and 1/3 * 3 and 1/3 = 10.

Problems can and do happen in math because you can't always do practical things with fractions. This is just the tip of the ice burg. I use this example because it is elementary and quickly (i think) understandable where we start running into problems.

 

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: MagnusTheBrewer
Originally posted by: Zenmervolt
Originally posted by: Mr Pepper
For example, the use of infinity in the case of dividing 10 into 3 parts. We end up with 3.33-infinity.
No, we don't. We get 10/3, a fraction. We simply use 3.33 repeating as a more convenient decimal representation of the same number. If we know that the decimal is indeed repeating infinitely, then we know the fraction that it represents. This is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
Even it we were allowed to use such a number (which doesn't exist) 3 parts of 3.33-infinity would still not equal 10.
It certainly does exist, as shown above.

Originally posted by: Mr Pepper
I suppose we can just say it's "close enough", but maybe we are barking up the wrong tree all together.
It's not "close enough" it's exactly right. The map is not the territory.

When you write the letter "t", does it look _exactly_ the same as when your father writes that letter? No, it doesn't, but both symbols represent the same letter. Likewise, 3.33 repeating and 10/3 represent the same number. They are equal. Again, this is 2nd or 3rd grade math.

Originally posted by: Mr Pepper
I do understand the concept though and I know that machine work "for example" only needs to be accurate within the constraints of the material/system that it's intended for.
Machine work is limited by the precision capabilities of the machining process, not by any limitations of the mathematical system. It's related to the matter of being physically able to match a specification within a set of tolerences and not to the matter of being able to measure the original specification. It's a completely different scenario.

Originally posted by: Mr Pepper
I am not saying that math is useless. I'm just asking the question, "is there a better way?"
The "better way" is to understand that math is not a prescriptive system. Rather, mathematics is a method of describing and communicating relationships and interdependencies. Mathematical formulae are discovered, not created. Mathematics is nothing more or less than the study of the underlying patterns that shape our world. As we learn more, we see more of these patterns and learn better how to describe them in the language of mathematics, but we (mankind) do NOT "invent" math. Math was, is, and forever will be.

ZV

You left out the 'Amen.'

I say again, while no one is denying math is a useful tool, viewing the world strictly thru a mathmatical/logical perspective will doom you to disappointment and will almost certainly earn the derision and persecution of the world. The reason is simple, the world (indeed the guy two houses over) views the problem, not to mention the order of operations differently.

There is nothing inherently virtuous about proselitizing logic as the correct viewpoint for inteligent people everywhere. The short sightedness of such people viewing the world in black and white has given rise to as many conflicts as accepted religions ever have. You can 'prove' your viewpoint mathmatically/logically all you want but, it will not alter the fact that just as many people will vilify every thought and idea you present in such a manner.

I have noticed that anyone questioning the rightness/validity of a purely logical view of life and the cosmos is subjected to ridicule and rejection by the scientific sorts on a level which rivals the most rabid theologist. I wonder why the logical thinker is unable/unwilling to evaluate other world views by the rules/logic which are central to those differing beliefs?


Excellent observations, & nicely articulated. Great food for thought in there. :beer:
 

Zenmervolt

Elite member
Oct 22, 2000
24,514
36
91
Originally posted by: Mr Pepper
Yes, I understand that 3.33.... represents 3 and 1/3. Perfectly. I know this is elementary. I know that you can take a "pizza" and cut it into sixths, eighths.. whatever. Fractions are our way of dealing with a flaw in our system (yes this is my opinion), that I don't think is difficult to understand. We are finite creatures trying to deal with infinite numbers.
Except that the fractional representation came first and the decimal approximation second. It's the 3.33 repeating that is the way of dealing with fractions. You have it backwards.

ZV
 

Mr Pepper

Senior member
Oct 15, 1999
282
0
0
Originally posted by: Zenmervolt
Originally posted by: Mr Pepper
Yes, I understand that 3.33.... represents 3 and 1/3. Perfectly. I know this is elementary. I know that you can take a "pizza" and cut it into sixths, eighths.. whatever. Fractions are our way of dealing with a flaw in our system (yes this is my opinion), that I don't think is difficult to understand. We are finite creatures trying to deal with infinite numbers.
Except that the fractional representation came first and the decimal approximation second. It's the 3.33 repeating that is the way of dealing with fractions. You have it backwards.

ZV

Fair enough, but that does not help the fact the we use the decimal value in everyday calculations today

Perhaps we can move on to a "Tastes great!" "Less filling!" discussion?
 
sale-70-410-exam    | Exam-200-125-pdf    | we-sale-70-410-exam    | hot-sale-70-410-exam    | Latest-exam-700-603-Dumps    | Dumps-98-363-exams-date    | Certs-200-125-date    | Dumps-300-075-exams-date    | hot-sale-book-C8010-726-book    | Hot-Sale-200-310-Exam    | Exam-Description-200-310-dumps?    | hot-sale-book-200-125-book    | Latest-Updated-300-209-Exam    | Dumps-210-260-exams-date    | Download-200-125-Exam-PDF    | Exam-Description-300-101-dumps    | Certs-300-101-date    | Hot-Sale-300-075-Exam    | Latest-exam-200-125-Dumps    | Exam-Description-200-125-dumps    | Latest-Updated-300-075-Exam    | hot-sale-book-210-260-book    | Dumps-200-901-exams-date    | Certs-200-901-date    | Latest-exam-1Z0-062-Dumps    | Hot-Sale-1Z0-062-Exam    | Certs-CSSLP-date    | 100%-Pass-70-383-Exams    | Latest-JN0-360-real-exam-questions    | 100%-Pass-4A0-100-Real-Exam-Questions    | Dumps-300-135-exams-date    | Passed-200-105-Tech-Exams    | Latest-Updated-200-310-Exam    | Download-300-070-Exam-PDF    | Hot-Sale-JN0-360-Exam    | 100%-Pass-JN0-360-Exams    | 100%-Pass-JN0-360-Real-Exam-Questions    | Dumps-JN0-360-exams-date    | Exam-Description-1Z0-876-dumps    | Latest-exam-1Z0-876-Dumps    | Dumps-HPE0-Y53-exams-date    | 2017-Latest-HPE0-Y53-Exam    | 100%-Pass-HPE0-Y53-Real-Exam-Questions    | Pass-4A0-100-Exam    | Latest-4A0-100-Questions    | Dumps-98-365-exams-date    | 2017-Latest-98-365-Exam    | 100%-Pass-VCS-254-Exams    | 2017-Latest-VCS-273-Exam    | Dumps-200-355-exams-date    | 2017-Latest-300-320-Exam    | Pass-300-101-Exam    | 100%-Pass-300-115-Exams    |
http://www.portvapes.co.uk/    | http://www.portvapes.co.uk/    |