Is hell exothermic or endothermic?

The following is an actual question given on a University of Washington engineering mid-term. The answer was so "profound" that the Professor shared it with colleagues, and the sharing obviously hasn't ceased...

Bonus Question: Is Hell exothermic (gives off heat) or Endothermic (absorbs heat)?

Most of the students wrote Proofs of their beliefs using Boyle's Law, (gas cools off when it expands and heats when it is compressed) or some variant. One student, however, wrote the following:

"First, we need to know how the mass of Hell is changing in time. So we need to know the rate that souls are moving into Hell and the rate they are 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 how many souls are entering Hell, let us 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 since people do not belong to more than one religion, we can project that 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.

Creation and Creator

Man is bewildered to think how vast, beautiful and useful the material world is. His practical life is so closely dependent on the material world that it is but natural that it should have a great significance for him. It will be no exaggeration to say that man is totally lost in this vast creation. His achievements prompt him to probe its mysteries still more. He feels that in case he continues to probe, he will secure still more comforts and conveniences. He devotes his entire life in research of the material creation. That is why material progress has become the sole aim of his life. Despite his research since time immemorial, he has not reached the end. For this, one reason can be that the material creation is undergoing moment to moment change. When one thing is extinct, another takes its place. Thus, man remains entangled in this cycle. This is called illusion. Caught in this crisis, man falls a prey to success and failure in the game of life. There is no stability.

Rainbow

A rainbow is an arch of light exhibiting the spectrum colors in their order, caused by drops of water falling through the air. It is seen usually in the sky opposite to the sun at the close of a shower and also in the spray of waterfalls. In the brightest or primary bow; often the only one seen, the colours are arranged with the red outside. Above the perfect bow is a secondary bow; in which the colours are arranged in reverse order; this bow is dimmer, because of a double reflection withing the drops.