Look, the entire problem is that wherever people start, their modifications lead to entirely wrong predictions. To be very clear this also happens when you sta

Look, the entire problem is that wherever people start, their modifications lead to entirely wrong predictions. To be very clear this also happens when you start with a theory that describes the local universe well, indeed the fact that when general relativity extrapolated backwards gives blatantly unphysical results is the entire issue we are trying to solve!