[kefka]

> There are a dozen different possibilities for what the photon has done - a dozen different universes, if you like. As long as the photon never interacts with anything else, this bundle of a dozen universes can act much the same as a single universe. Certainly if you're just looking at a telescope, all dozen versions of that telescope are behaving the same, so they behave like a single unified instance.

Well that's interesting you bring it up this way.

If what you said is possibly true, then light could be a carrier of things like multi-dimensional spin, or possibly where dark matter really comes from (inter-dimensional interference).

I know Greg Egan has discussed the possibility of infinite orthogonal dimensions that energy can leak into. And by energy conservation, the result would be things like dimensional rotation and other effects we cannot yet perceive.

One theory is that the EM-Drive uses a rudimentary version of this effect. We're all still awaiting the results.

[lmm]

> If what you said is possibly true, then light could be a carrier of things like multi-dimensional spin, or possibly where dark matter really comes from (inter-dimensional interference).

That's a total non-sequitur. What on earth are you talking about?