I can't learn it fast enough

To have three sons all from the same father, and I think I played a role in it as well, to have them all be so different physically, emotionally and constitutionally must be what it's like to be a Polygamist, not that I'm married to these guys, but I do have to learn the subtleties of their moods, favorite foods, rage triggers, lying tells, homework breaking points and specific odors so I know whom to blame. It's exhausting but invigorating when I get it right.
So today, the most relevant thing I've learned about parenting is that in itself it is a learning process and I'm probably going to have to go to summer school.