So 5go, does this: "Then why do we forget then. It's called mental capacity for a reason." mean that you believe that we get to a point where our brain is full, we've reached our mental capacity, and nothing more goes in or is remembered???
We forget because we don't have total recall. Imagine what chaos there would be if we really remembered everything. Our minds would just be overrun with tons of useless crap. Forgetting has nothing to do with the capacity of our brain to think, learn and remember. The idea that our brains have a capacity, like filling a bucket with water til it is full and just runs over the edges, is absurd.
S4