home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.math
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!bgsuvax!opie.bgsu.edu!bc205cs
- From: bc205cs@opie.bgsu.edu
- Subject: Zeno
- Message-ID: <1992Oct8.000340.1@opie.bgsu.edu>
- Lines: 34
- Sender: usenet@andy.bgsu.edu (USENET)
- Organization: Bowling Green State University
- Date: Thu, 8 Oct 1992 04:03:40 GMT
-
- Ok. I don't read this newsgroup, but I know that if anyone can help me, it
- will ne you guys. If this problem has already been addressed in this
- newsgroup, go ahead and flame me, but please give me some kind of answer.
-
- Here's the problem: My Calculus II professer was discussing the sum of the
- infinite series 1/2 + 1/4 + 1/8, and so on. He compared this to a famous
- problem of Zeno's, in which zeno said that if you are trying to get from point
- A to point B, and you go half of the remaining distance with each step, you
- will never make it to point B. This seems like common sense, because with
- every step, you are not allowed to go more than half of the remaining distance.
-
- Well, my professor showed us that the sum of this as the number of steps
- approaches infinity is 1 -- To which my answer was, Great: you have to walk
- _forever_ to make it to point B. Then he explained, 'Let's say that you can
- move 1 unit per minute. The first step will take 1/2 minute, the next will
- take 1/4 minute, and so on. So, it will take 1 minute to get from point A to
- point B!'
-
- He used this to 'prove' Zenos paradox to be wrong -- you _can_ get from point A
- to point B. When I still questioned this, he reassured me, 'It took the
- world's greatest minds centuries to figure this out, don't feel bad if you
- don't understand it at first.'
-
- Now here is my question: The rule of the game is that you can only step half
- of the remaining distance on each step. Well, if you are standing at Point B,
- that implies that you stepped onto point B. If you stepped _onto_ point B,
- then you broke the rule! You were only supposed to step _halfway_ to point B.
- Therefore, Zeno's paradox holds, and the greatest minds are wrong.
-
- So, What do you think?
-
- --Joshua
- jallen@andy.bgsu.edu or BC205CS@opie.bgsu.edu
-
-