The Fine-Tuning Argument for Gravity

The argument is that the strength of something like gravity has to be very precise it was only tiny bit bigger or smaller. Each individual constant on their own are very finely tuned but you need to have all of these constants all very finely tuned if any one of them were to change ever so slightly then life couldn't exist. There's no way that anything resembling a world we're aware of could exist, he says.