I have no idea why they would base their predictions on production either. Seems you would base it on consumption.
But honestly...all those predictions are using TODAY'S numbers.
We have no idea how much or how little more they will find and be able to produce 50 years from now.
And conversely we have zero idea how much consumption there will be of fossil fuels either.
For all we know technology could take a huge leap and a whole new energy source could be found. Or maybe not. Either way, solar and wind are already generating a nice chunk of energy.
I can only assume that will continue to rise and eventually rise faster than new population growth in energy consumption.
