For calculations of conditional probabilities I've found an initial sample size of 10,000 is more manageable. But that's just me.
Yes, if you are not prone to silly order-of-magnitude errors in mental arithmethics. For example if it is intuitive and fast for you that the square root of 40000 is 200 and never make the mistake of thinking for a second it is 2000 or 20. I do. Not sure why.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.