Knowing what you know vs knowing what you don’t know
There’s a difference between knowing enough about a subject to think you know all about it, and knowing enough to know how little you actually know. I suspect many of us in the industry would admit to thinking we knew it all earlier in our careers based on the limited knowledge we possessed at that time, then as knowledge of subjects increases so does awareness of how much we still have to learn. In several areas of IT where I know a reasonable amount, if you’d asked me to rate my knowledge out of 10 back in the first few years of my career I’d have easily rated myself far higher than I would today. That doesn’t mean I knew more about it back then, rather that while I know more about it I also have a much better idea of the scope of that area and therefore how much more there is for me to learn.