my pseudoscience thoughts for the day:
There is a continuous line from "you" to "reality" it's impossible to separate the two. for example there is no one point in which looking at a color becomes an emotion, further there is no one point at which an emotion becomes a thought. Slowly the ability to immediately and precisely communicate "reality" with other people breaks down, this is where identity is formed
You see "material" is just instantly and mostly accurately communicated between each other, if it wasn't then material would start becoming perceived as thoughts of our own and become part of our identity. You have the whole world inside your head.

It got me thinking too if ai and computers make it possible to directly communicate thoughts/feelings and such, we will all further become the same, individuals will stop existing in the way we do now, your sense of self will be reduced to whatever is still uncomunicatable.