Every once in a while I have a slight pang of "well, jeez, I spent $120k and 10 years doing this! And now it's free?" It's like that moment when you buy a com

Every once in a while I have a slight pang of "well, jeez, I spent $120k and 10 years doing this! And now it's free?" It's like that moment when you buy a computer and its successor comes out the next week. With a few exceptions, I barely remember the lectures. At times it feels like I barely remembered what I learned! But I sure do remember how to learn.