My head hurts too Jeff. I can't understand it. But I read a little further. It has something to do with the natural decay of all the matter in the universe to an ultimate state of uniformity. I suppose the big bang is involved.
I love being challenged to just think about space facts, like how far it is to the nearest star, or how many galaxies are at the edge of the universe, or how man could ever even get to the edge of the milky way considering how we need gravity to survive long term. They say they need to conquer how to put a space traveler into suspended animation, for like 1,000 years to reach some near stars even traveling at light speed (186,000 miles per second). And then when he wakes up, what will his muscles be like?
WOW!