[tpae]

It's not about the knowledge, it's more about being on the spot.

More experience and credentials you have, the higher expectation is desired, which leads to higher pressure to solve that problem in the best case possible.

I've been coding since 14 years old, got a degree in Computer Science, haven't been back to school in 5 years, and most of my work just comes to me as second nature. If I have just small doubts of my abilities, I just cannot perform. Which happens during interviews.