1. Gladwell has a difficult relationship with truth and reality. 10,000h rule is utter nonsense and has been debunked many times since. 2. You don't need to ma

1. Gladwell has a difficult relationship with truth and reality. 10,000h rule is utter nonsense and has been debunked many times since. 2. You don't need to master anything to switch careers. You just need to be useful and productive. Many employers will value your experience, work ethic, knowledge and will trust you to learn on the go.