 Unlearning is the most underestimated form of learning. I think that we humans have blind spots about. I think the older that we get and the more we learn, the more we have to unlearn. And I think one of the problems for humans is that we keep adding new learning on top of old stuff. And the old stuff is like rubble. It needs decluttering. You've got to clear the ground, clear the platform for the new stuff to land and take. And I think unlearning is like decluttering your attic.