In the 19th century, a German psychologist named Hermann Ebbinghaus, dedicated to studying memory, discovered what is now known as the forgetting curve, according to which just a few hours after learning something new, we forget a significant percentage. And finally, a few days later we ended up forgetting everything.

Although this finding could lead us to conclude that studying something new does not make sense, because sooner or later (especially earlier) we will end up forgetting practically everything, this same German psychologist also asserted that as memories are consolidated, the forgetting curve is flattened more; and with that, a point is reached where we will forever remember what new we learn.