why we cant keep many things in our memory?

Question

for example if we read three or four pages in a book means why cant we keep all the lines we studied in our memory

Answer 1

A minority of people can, I personally have problems remember vast amounts of text if ive only read it once, but diagrams are another thing.

Answer 2

It's analogous to eating food. All the separate chunks of food do not sit in the guts undigested. They have to be broken down and assimilated into our own bodily structure. Likewise with mental impressions, which must generally blend with the rest of the memories we already have stored.

Answer 3

I have no idea...
But, have you notice that, in your memory, you remember EVERYTHING bad thats happened.....more bad than good to be honest.?
x

Answer 4

we usually remember things that we tried out ourselves eventhough it fails..

Answer 5

cuz we smoke refer.