I say that becuase of what researchers have discovered about human memory. The memory has been found to have the ability to grow rather then get 'filled'
They have found that its a function that is limitless.
First, human memory is
not limitless, it is impressively large but it's certainly not limitless. You memories are stored by changes in connection patterns between neurons, and they are finite.
Secondly, there's nothing about human memory (except capacity) that makes it different from other animals. The same processes that form memories in rats and mice form memories in our brains. Hell, even the tiny nematode worm
Cenorhabditis elegans with only 302 neurons in its "brain" uses only almost the same mechanisms for learning.