A true story. A thermodynamics professor had written a take home exam for his

graduate students. It had one question:

"Is hell exothermic or endothermic? Support your answer with a proof."

Most of the students wrote proofs of their beliefs using Boyle's Law or some
variant. One student, however wrote the following:

First, we postulate that if souls exist, then they must have some mass. If they
do, then a mole of souls can also have a mass. So, at what rate are souls
moving into hell and at what rate are souls leaving?

I think that we can safely assume that once a soul gets to hell, it will not
leave. Therefore, no souls are leaving.

As for souls entering hell, lets look at the different religions that exist in

the world today. Some of these religions state that if you are not a member
of their religion, you will go to hell. Since, there are more than one of these
religions and people do not belong to more than one religion, we can project
that all people and all souls go to hell.

With birth and death rates as they are, we can expect the number of souls in
hell to increase exponentially.

Now, we look at the rate of change in volume in hell. Boyle's Law states that
in order for the temperature and pressure in hell to stay the same, the ratio of
the mass of souls and volume needs to stay constant.

So, if hell is expanding at a slower rate than the rate at which souls enter
hell, then the temperature and pressure in hell will increase until all hell
breaks loose.

Of course, if hell is expanding at a rate faster than the increase of souls in

hell, than the temperature and pressure will drop until hell freezes over.

It was not revealed what grade the student got.

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- Chahat