Pi is a lie?

This forum is for discussion about anything else.
User avatar
Save The Dragons
Save The Dragons
He/Him
Protection unnecessary
User avatar
User avatar
Save The Dragons
He/Him
Protection unnecessary
Protection unnecessary
Posts: 21464
Joined: April 26, 2004
Pronoun: He/Him
Location: WA, USA

Post Post #50 (ISO) » Sun May 14, 2017 12:59 pm

Post by Save The Dragons »

If you cut a pie into 3rds, you have 1/3 of a pie, but you also have 0.33333... of a pie. Is it a rational measurement or an irrational one?
User avatar
Annadog40
Annadog40
Owl of the Night Chat
User avatar
User avatar
Annadog40
Owl of the Night Chat
Owl of the Night Chat
Posts: 786
Joined: May 2, 2015
Location: Arendelle
Contact:

Post Post #51 (ISO) » Sun May 14, 2017 1:06 pm

Post by Annadog40 »

Rational. Since it has a definitive pattern.
This is my life now

Once you have 100 posts, click here to go to the page to join the speakeasy group.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #52 (ISO) » Sun May 14, 2017 1:10 pm

Post by eagerSnake »

Second, you can't measure anything exactly. Measuring instruments have limited precision. So any measurement you're going to make is really just a rational approximation to whatever the real length is. It says nothing about whether the distance itself is rational or irrational.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #53 (ISO) » Sun May 14, 2017 1:12 pm

Post by eagerSnake »

Catch 22.

Further, the world at a very fine level is fuzzy, so where do you decide the measurement should start/stop at?
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #54 (ISO) » Sun May 14, 2017 2:19 pm

Post by eagerSnake »

10/10
User avatar
Charles510
Charles510
he
Goon
User avatar
User avatar
Charles510
he
Goon
Goon
Posts: 219
Joined: March 11, 2017
Pronoun: he
Location: San Francisco Bay Area

Post Post #55 (ISO) » Sun May 14, 2017 8:16 pm

Post by Charles510 »

How do perfectly rational distances make sense in the real world? You can not have exact measurements in the real world. There is always going to be some +/- margin of error. You will only find a perfect unit distance as a mathematical ideal.
User avatar
Cheery Dog
Cheery Dog
Kayak
User avatar
User avatar
Cheery Dog
Kayak
Kayak
Posts: 8037
Joined: June 30, 2012
Location: OMG BALL!

Post Post #56 (ISO) » Sun May 14, 2017 8:29 pm

Post by Cheery Dog »

In post 46, eagerSnake wrote:And you think Elvis Presley came up with those moves on his own?
he's an alien, of course he did
Holder of the Longest Continuous Weekly Mafiascum Post Record. 1 July 2012 - 16 Feb 2023
*It may be held by someone else if you discount the major downtime in 2012 and 2014, I'm not doing the research.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #57 (ISO) » Mon May 15, 2017 12:32 am

Post by eagerSnake »

In post 55, Charles510 wrote:How do perfectly rational distances make sense in the real world? You can not have exact measurements in the real world. There is always going to be some +/- margin of error. You will only find a perfect unit distance as a mathematical ideal.
I never claimed they did make sense

Burden of proof
User avatar
Who
Who
Yes?
User avatar
User avatar
Who
Yes?
Yes?
Posts: 4745
Joined: March 22, 2013
Location: Third Base

Post Post #58 (ISO) » Mon May 15, 2017 1:06 am

Post by Who »

Exact nonzero distances don't make sense in the real world, rational or irrational.
Who said that?
Chamber. It's all a conspiracy.
Or is it?
6
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #59 (ISO) » Mon May 15, 2017 1:17 am

Post by eagerSnake »

Who wrote:Exact nonzero distances don't make sense in the real world, rational or irrational.
In post 47, chamber wrote:
In post 45, eagerSnake wrote:
In post 43, Davsto wrote:poor sod
Lol because irrational distances don't make logical sense in the real world, only in the ideal mathematical world
no, they still make sense even in the real world.
IDK who is in the right but I'd put money on Who
User avatar
chamber
chamber
Cases are scummy
User avatar
User avatar
chamber
Cases are scummy
Cases are scummy
Posts: 10703
Joined: November 20, 2005

Post Post #60 (ISO) » Mon May 15, 2017 1:24 am

Post by chamber »

Right, what who said is fine. I don't think that's what you meant though given that you specified irrational distances. Irrational distances make as much sense as any non-zero distance.
Taking a break from the site.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #61 (ISO) » Mon May 15, 2017 1:26 am

Post by eagerSnake »

In post 47, chamber wrote:
In post 45, eagerSnake wrote:
In post 43, Davsto wrote:poor sod
Lol because irrational distances don't make logical sense in the real world, only in the ideal mathematical world
no, they still make sense even in the real world.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #62 (ISO) » Mon May 15, 2017 1:27 am

Post by eagerSnake »

The bias is pretty clear I think
User avatar
chamber
chamber
Cases are scummy
User avatar
User avatar
chamber
Cases are scummy
Cases are scummy
Posts: 10703
Joined: November 20, 2005

Post Post #63 (ISO) » Mon May 15, 2017 1:28 am

Post by chamber »

My statements aren't contradictory.
Taking a break from the site.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #64 (ISO) » Mon May 15, 2017 1:31 am

Post by eagerSnake »

In post 63, chamber wrote:My statements aren't contradictory.
User avatar
chamber
chamber
Cases are scummy
User avatar
User avatar
chamber
Cases are scummy
Cases are scummy
Posts: 10703
Joined: November 20, 2005

Post Post #65 (ISO) » Mon May 15, 2017 1:38 am

Post by chamber »

You have to assume that I'm talking with perfect precision and no context to take them as contradictory. It's obvious to me that no measured value is accurate in practice, irrational or rational. But the bases of this thread was you having a deep misunderstanding about irrational numbers that I feel you still possess. In my first statement what I was trying to get across was that there was no divide between irrational or rational numbers in that sense. I believe that was a reasonable way for me to read what you said given that you were still specifying irrational numbers. If it's not what you meant you could have stated as much, if not when I said it, now. Instead you are trying to shift blame onto me when no blame needs to even exist.
Taking a break from the site.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #66 (ISO) » Mon May 15, 2017 1:45 am

Post by eagerSnake »

You said irrational distances make perfect sense outside of idealistic mathematical planes

You said that

Now YOU'RE trying to shift the blame for me not specifying "exact" which I was driving at as you can see in #52
User avatar
chamber
chamber
Cases are scummy
User avatar
User avatar
chamber
Cases are scummy
Cases are scummy
Posts: 10703
Joined: November 20, 2005

Post Post #67 (ISO) » Mon May 15, 2017 1:54 am

Post by chamber »

In post 52, eagerSnake wrote:just a rational approximation to whatever the real length is
Taking a break from the site.
User avatar
Who
Who
Yes?
User avatar
User avatar
Who
Yes?
Yes?
Posts: 4745
Joined: March 22, 2013
Location: Third Base

Post Post #68 (ISO) » Mon May 15, 2017 2:14 am

Post by Who »

What I said was more precise. What Chamber said was at the same level of precision as the conversation had been up to the point where I said the thing about no distances making sense, and was correct to that level of precision.
Who said that?
Chamber. It's all a conspiracy.
Or is it?
6
User avatar
Charles510
Charles510
he
Goon
User avatar
User avatar
Charles510
he
Goon
Goon
Posts: 219
Joined: March 11, 2017
Pronoun: he
Location: San Francisco Bay Area

Post Post #69 (ISO) » Mon May 15, 2017 2:23 am

Post by Charles510 »

Every number is rational after you round it off to a certain level of precision.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #70 (ISO) » Mon May 15, 2017 2:26 am

Post by eagerSnake »

I feel like we've reached a common ground at least.

The next question is whether the following statement is true:

No matter how small of a unit you divide the diameter into, if you try to use that unit to measure the circumference, at the end you will have a space too small for that unit, and vice-versa.

Furthermore, the ratio of that space left over to the unit must be irrational.
User avatar
Who
Who
Yes?
User avatar
User avatar
Who
Yes?
Yes?
Posts: 4745
Joined: March 22, 2013
Location: Third Base

Post Post #71 (ISO) » Mon May 15, 2017 2:38 am

Post by Who »

In post 70, eagerSnake wrote:I feel like we've reached a common ground at least.

The next question is whether the following statement is true:

No matter how small of a unit you divide the diameter into, if you try to use that unit to measure the circumference, at the end you will have a space too small for that unit, and vice-versa.
If you have a perfect circle that is true. You will not have a perfect circle in the real world. Or well, maybe weird shit like black holes or something you might get one, but not in normal circumstances.
Last edited by Who on Mon May 15, 2017 2:41 am, edited 1 time in total.
Who said that?
Chamber. It's all a conspiracy.
Or is it?
6
User avatar
Charles510
Charles510
he
Goon
User avatar
User avatar
Charles510
he
Goon
Goon
Posts: 219
Joined: March 11, 2017
Pronoun: he
Location: San Francisco Bay Area

Post Post #72 (ISO) » Mon May 15, 2017 2:40 am

Post by Charles510 »

That has to be true because we know that pi is irrational. The ratio of C/D will be irrational only if C or D or both are irrational.
User avatar
eagerSnake
eagerSnake
Mafia Scum
User avatar
User avatar
eagerSnake
Mafia Scum
Mafia Scum
Posts: 3821
Joined: May 29, 2016

Post Post #73 (ISO) » Mon May 15, 2017 3:36 am

Post by eagerSnake »

Based on what we know, anyway, it must be true.

Why could I not theorize that there is a unit of measurement so infinitesimal that if everything was measured using the unit there would be no irrationality?
User avatar
Who
Who
Yes?
User avatar
User avatar
Who
Yes?
Yes?
Posts: 4745
Joined: March 22, 2013
Location: Third Base

Post Post #74 (ISO) » Mon May 15, 2017 3:46 am

Post by Who »

In post 73, eagerSnake wrote:Based on what we know, anyway, it must be true.

Why could I not theorize that there is a unit of measurement so infinitesimal that if everything was measured using the unit there would be no irrationality?
Which axiom would you like to get rid of to make that happen?
Who said that?
Chamber. It's all a conspiracy.
Or is it?
6
Post Reply

Return to “General Discussion”