[albanread]

I think the concept has been explored quite widely.

Indicators might be that groups of physicists believe in new tiny particles and then discover them.

Depending on how powerful the effect is; it might have interesting implications.

Consider that despite all the odds we are still here as a species. For example I sometimes imagine that the world was destroyed by a global atomic war in the 1980s but since we all rejected that bleak reality - we have this current reality instead.