I think not, though am just speculating as a layman when I say that. But physicists have theorised this in much detail: https://en.wikipedia.org/wiki/Variable_

I think not, though am just speculating as a layman when I say that. But physicists have theorised this in much detail: https://en.wikipedia.org/wiki/Variable_speed_of_light https://en.wikipedia.org/wiki/Variable_speed_of_light I would imagine that a universe that doesn't obey basic causality will not exist for long, even if it comes into existence, nor will it support complex structures that can observe and reflect (like life). Other universes' physics and evolution might be very different, but whatever its laws, on a macro scale I'd imagine they follow internal consistency. So yes, we might evaporate, but it would be well predicted by the science of that universe. It won't happen inexplicably. :-)