The point is that these are "back of the envelope" calculations.
Fermi was known for asking questions like "how many gold balls git into a suitcase". The point isn't to get a perfect answer. The point is to get a reasonable answer.
In this case, the point is to answer the OP question in laymans terms. Using not much more than reasonable assumptions, and grade 5 math.
Fermi was known for asking questions like "how many gold balls git into a suitcase". The point isn't to get a perfect answer. The point is to get a reasonable answer.
In this case, the point is to answer the OP question in laymans terms. Using not much more than reasonable assumptions, and grade 5 math.
Or, you can bike shed over details.