On Wednesday, November 15, 2017 at 2:37:02 PM UTC-7, Brent wrote: > > > > On 11/15/2017 12:06 PM, agrays...@gmail.com <javascript:> wrote: > > > > But if it tunnels into existence at t=0, how can it be infinite in > > extent? I find that egregiously hard to imagine, plus the fact that > > one has to use QM to explain the tunneling, and that, ipso facto, > > seems to imply it's infinitesimally small in spatial extent t=0 at > > A limitation of imagination. Nothing about tunneling assumes a size. > > Brent >
Agreed. My imagination is not the be-all, or end-all of anything. But isn't it claimed that Einstein's field equations breakdown earlier than Planck time, and this is where QM must be invoked, when the universe is presumably very small in spatial extent? Alternatively, doesn't tunneling assume QM, which is a theory about the micro world. As I recall the concept is limited to QM. AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
