I used to take a couple of seconds before answering questions. My mind was working out the answer (mostly from first principles) and I was framing the answer to best match the recipient. Then I started to notice that I was answering questions immediately - kinda like I knew the answers! This unnerved me and I had to change jobs because, knowing how to do the job feels wrong!!! I am safely back in unchartered waters and able to feel comfortable in my inabilty to know answers immediately. 
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