It's also fear. You're a new software developer and you just got your first job. You see how much more the other developers know than you and you're intimidated

It's also fear. You're a new software developer and you just got your first job. You see how much more the other developers know than you and you're intimidated. "Well, I don't want to look stupid". You don't ask questions that you need to because of self-imposed fear and it stalls learning.