There's this common lack-of-self-awareness thing about people that undoubtedly are experts in their fields: "I've been doing X for 10 years and then I encounter

There's this common lack-of-self-awareness thing about people that undoubtedly are experts in their fields: "I've been doing X for 10 years and then I encountered Y and, suddenly, everything clicked." And then they go full post hoc / propter hoc and start praising the Y thing as something that one has to start learning from the very beginning. While the truth is - everything "clicked" because you was doing it for 10 years, not because you started using Y. And Y is extremely confusing and off-putting for anyone who don't have the full context of your experience.