It might be tautological, but it also happens to be correct! The Pareto rule applies: A beginner progressing to intermediate might quickly iron out the biggest

It might be tautological, but it also happens to be correct! The Pareto rule applies: A beginner progressing to intermediate might quickly iron out the biggest blunders and by the time they're advanced get 80% there, but mastering that last 20% requires decades of practice.