4 ms·

It is not, because at least 3 factors of the equation are incredibly difficult to estimate. About as difficult as estimating the probability of an alien encount

It is not, because at least 3 factors of the equation are incredibly difficult to estimate. About as difficult as estimating the probability of an alien encounter. So the equation is basically useless.

mikeash 7y ago
And what’s the term for a figure that’s hard to estimate but which you guess at anyway? An “assumption.”
- bnegreve 7y ago
  Yes, and in this case, an unreasonable one.