The 10,000-hour rule suggests that it takes approximately 10,000 hours of deliberate practice to achieve a high level of mastery in a specific field or skill.
However, I believe this notion is no longer entirely accurate due to the availability of resources like YouTube tutorials, AI-powered tools, and other modern learning aids, which allow individuals to expedite their learning and skill development, potentially requiring fewer than 10,000 hours to attain a considerable level of proficiency in certain areas.
There was a time when it was believed that running a mile in under 5 minutes was physically impossible for humans; however, nowadays, there are high schoolers who can accomplish this feat.
