"the more you know the more you forget "?? How is that ?
Ok let's quantify the whole thing.Just an example:
Suppose you learned 10 words you will forget 2,so you gained 8 words.
If you learned 100 you will forget more , let's say 20 ,but you will still have memorized 80 words. The whole outcome is still relatively more.
So adding up 72 words to your vocabulary is worth studying more then, I guess.