Other ideas
These are some of my quick ideas (To be developed fully later)

There is the theory out there wether we see colours the same way as others. But can it be more? can some people experience reality as literally flying around while we see them as walking?

Can mental capacity be the fact that we can only have 1 thought, because we are only 1 person, and then the determining factor of mental capacity would be the speed of thought

If time stops is there consciousness? or rather, can consciousness exist in a place without time?

Basically why proability doesn't exist philosophically speaking