Hello all, greetings from an order atheist

[Alex K]

I've got a kind of dated one perhaps from myself..

The Plank Barrier at 10(-43) second of the inflation/big bang is where I read that quantum models started to be inadequate for further understanding. This js from reading stuff 20 years ago. Has anything changed for modern models of the big bang ?

I need some new books...

Heh, a side remark in the intro thread and me typing on the phone may not be the optimal conditions to have that discussion, but anyways... I'd say in inflationary scenarios one does not run into the classic singularity when turning back time, because inflation happens before one reaches that point. The notion of events before inflation are very fuzzily defined and dependent on the specific scenario. The planck scale problem sometimes still appears in a sense because many of the simplest inflation models require field values beyond the planck scale to obtain sufficient inflation (large field models) and that is perceived as problematic. There seem ways out of that, but one also needs to wait whether the recent BICEP measurements are truly falsified to have a clearer picture...