Tiger Woods
Right? Tiger didn't decide "Oh, well, I'm sick of this, I already know this. I don't need to practice anymore." That's what a lot of English learners do. They say "I already know the past tense. I can take a test, I can pass it, no problem." But when they speak they make constant mistakes with the past tense. It's because they did not learn it deeply. They know it at a shallow level, they can take a test, but they don't know it deeply, deeply, deeply, the way Tiger Woods knows his swing because he's done it, I don't know, 50,000 times, 100,000 times, maybe more. So deep learning is something else we can learn from our role models.