Nailed it in three (don’t know what that means, either).
Anyone who believes that answers come in a box should stick to cake mixes, and even they require work. But the model is pretty solid.
Regarding the laws of physics, I would have no success if I believed in limits given to me. But I’m not risking lives.
Overall, I agree with your premise with one caveat: you need to understand the complexity, but you need to be able to explain it in simple terms. That’s Comprehension 101.
Which is a class I really wish were offered in college.