Then we should look around ourselves and see an older universe.
Hmm. Okay, if FTL was possible, we’d observe a younger universe, and if there was a strong barrier to life we’d observe an older universe. If both are true, or both are false, we might well observe the age of the universe as it is now. So how can that be a reason to update strongly about either variable? (Taylor G. Lunt has made the same point.)
Hmm. Okay, if FTL was possible, we’d observe a younger universe, and if there was a strong barrier to life we’d observe an older universe. If both are true, or both are false, we might well observe the age of the universe as it is now. So how can that be a reason to update strongly about either variable? (Taylor G. Lunt has made the same point.)