I came across this brief, entertaining and informative video on YouTube and decided to share it here. I also decided NOT to share it. However, I was only deciding NOT to share it with those who never watch it. Thus, you may decide for yourself whether I did or did not choose to share it with YOU. :)
Either way, it is a free and well meant offer of the video, backed up by a full provision of what is being offered (this is a Moderate Calvinist's inside joke for those of you who missed it).
The video begins with one of the classic paradoxes of the Greek philosopher Zeno, and then goes on to explore time travel, parallel universes, physics, mathematics, artificial intelligence, the theory of relativity and quantum mechanics. Quite an accomplishment for a mere six minutes!