[jnbiche]

Well, you didn't answer it in your blog, either. You simply posted link to a video that many HNers will not even click on, given our well-known preference for text presentations and the fact that many of us browse from work locations where video playing is not appreciated (even if the presenter in the video happens to be a pretty cool guy in this case).

I'd recommend at least writing a brief summary to the video if you really want to maintain an effective FAQ.

[melling]

Just watch Neil deGrasse Tyson walk the dog while explaining it. I can't really do it any better than him.