[Off-topic] Requests author discusses MentalHealthError exception

[Chris Angelico]

On Thu, Mar 3, 2016 at 1:27 PM, Steven D'Aprano <steve at pearwood.info> wrote:
> We can be absolutely certain that Kenneth weighs less than the entire
> universe. We don't even need a set of scales.

Formal proof:

1) No physical object can have negative mass.
2) I am a part of the universe and have positive mass.
3) I am not Kenneth.
4) The sum of my mass and Kenneth's mass must exceed Kenneth's mass alone.

Unless someone wants to dispute 1 or 2, we can be logically certain.

ChrisA