You memoized some of the computation. "Think rate is fixed" glosses over activities with compounding returns. Learning! Better abstractions and heuristics can

You memoized some of the computation. "Think rate is fixed" glosses over activities with compounding returns. Learning! Better abstractions and heuristics can have an enormous impact on problem solving efficiency. First-principles thinking is a powerful hammer, but it's expensive. Over-use it and you'll get nothing done. Under-use it, and you'll do nothing original. Knowing where to use it is the trick, and that's _also_ a skill that can be improved over time.