Part 2 to the fermi assignment:
4. what other methods could be used to estimate the size of a large crowd?
describe how and why the crowd size estimate supplied by event organizers might differ from estimates made by other groups.
5. in solving real-world problems such as estimating a crowd size, the number
of possible telephone numbers, or the answer to a fermi question, why is it necessary to first make some reasonable assumptions about the situation?