[UCANSEE2]

The article makes it sound like the universe is a human-type film hologram read with a laser in a lab, but read carefully.

Jumping to illogical and unfounded conclusions is... just so much more fun.

In that context.... If all the light in the Universe went out, would the Universe still exist?

[Pecos]

In that context.... If all the light in the Universe went out, would the Universe still exist? Experiment. Find the switch. Turn it OFF. See if you and the switch still exist. If so, please turn it back on. I've kinda gotten used to the place.

[Hot Tabasco]

If all the light in the Universe went out, would the Universe still exist?

I'm sure there would be a nightlite on somewhere just to keep the boogeyman away.......

[DBrow]

You mean a universe without photons? Well, since we’re making this up as we go here, I think that a photonless universe would still have mass. The question is does a baryonic universe require photons, and I think it might be OK, but Genesis suggests otherwise (no light, no anything).

Certainly you could not observe much in a universe without photons.