# Working with the set of real numbers (was: Finding size of Variable)

Steven D'Aprano steve+comp.lang.python at pearwood.info
Thu Mar 6 04:06:40 CET 2014

```On Wed, 05 Mar 2014 21:31:51 -0500, Roy Smith wrote:

> In article <53176225\$0\$29987\$c3e8da3\$5496439d at news.astraweb.com>,
>  Steven D'Aprano <steve+comp.lang.python at pearwood.info> wrote:
>
>> Physics is the fundamental science, at least according to the
>> physicists, and Real Soon Now they'll have a Theory Of Everything,
>> something small enough to print on a tee-shirt, which will explain
>> everything. At least in principle.
>
> A mathematician, a chemist, and a physicist are arguing the nature of
> prime numbers.  The chemist says, "All odd numbers are prime.  Look, I
> can prove it.  Three is prime.  Five is prime.  Seven is prime".  The
> mathematician says, "That's nonsense.  Nine is not prime".  The
> physicist looks at him and says, "Hmmmm, you may be right, but eleven is
> prime, and thirteen is prime.  It appears that within the limits of
> experimental error, all odd number are indeed prime!"

They ask a computer programmer to adjudicate who is right, so he writes a
program to print out all the primes:

1 is prime
1 is prime
1 is prime
1 is prime
1 is prime
...

--
Steven D'Aprano
http://import-that.dreamwidth.org/

```