Krauss @cofty: "-- the absence of space and time, --"
perhaps that should read "spacetime"? a huge difference. and, "nothing" ,--elsewhere according to these writers, is not only unstable but seething with energy, virtual activity,-- in and out of existence, all implying the existence of time, even if in a well chosen sentence, they might appear to try to nullify that fact; --often, "time" is misinterpreted so as to mean "movement through" time. or?
PS: "instability" can mean to be momentarily stationary, teetering on the brink of movement, but that movement will precipitate movement through time, that according to Sean Carroll.s preference is a pre-existing dimension, not a river that started flowing at the big bang. added:
Is there the possibility that this "nothing", unstable and endowed with seething energy is still out there? waiting to be absorbed by the universe as it expands, constrained by it's "one way sign" in the dimension of time? because don't forget, there IS nothing outside the universe.