Memorization isn't the problem. It's intuition. What if the right side of the screen was "previous page" and the left side of the screen was "next page"? I bet

Memorization isn't the problem. It's intuition. What if the right side of the screen was "previous page" and the left side of the screen was "next page"? I bet you that when you sit down to read, your first tap would always be the wrong one. Then you'd remember and get it right, until it was time to put the kindle away. The next time you sat down to use the kindle, you'd tap the wrong side again. Repeat ad infinitum. I've been through that cycle personally until I got so annoyed that I either fixed it or stopped using it.