Please provide evidence that my math is wrong.Just look back at every post where you claim that duration of collapse is only solvable by the calculus. At which point it should dawn on anyone with a highschool diploma that you don't know what you're talking about.
It's clear to us that you don't know what you're talking about.
Fidel, please stop with the mild insults. It does not become you. Instead of making snide innuendos of what you incorrectly think is a mistake of mine, please actually show how I am wrong.