How to Define the Strength of Gravity

In cosmology, the effect of gravity. I how to define the strength of gravity as a really tricky question. It's gravity plus like the mass of the proton you have to talk about. The idea of the fine tuning for life is that unless they are set ina ry small range, a life would not be possible. And so whether thei'r carbon based or some other base, that just wouldn't be possible. So it has to be typically estimated one part in ten to the hundred twentieth power.