According to Wikipedia [1], numbers around 100 billion have been bandied about quite seriously, and much lower estimates have been "debunked as unscientific".
An interesting debate, regardless. I had no idea it could be so hard to calculate. At any rate, as you say, 43 bits would have humanity covered for a long, long time.
An interesting debate, regardless. I had no idea it could be so hard to calculate. At any rate, as you say, 43 bits would have humanity covered for a long, long time.
[1] http://en.wikipedia.org/wiki/World_population#Number_of_huma...