My calculator reckons that $\pi$ has a finite decimal expansion. But this means that $\pi$ is rational, since multiplying by a sufficiently large power of 10 gives an integer!
oh theres a very obvious flaw in that statement if you relate that to your previous post.
If you were the postman, you would know whether the medal is already in the mail or not because you're delivering it yourself.
Therefore, by proof of contradiction, you're not the postman.