The first couple of years in industry you (generally) know you are a newb. It is that awkward 2-6 years of experience range where you a fair bit of experience b

The first couple of years in industry you (generally) know you are a newb. It is that awkward 2-6 years of experience range where you a fair bit of experience but really you don't. You just aren't a newb. People with high confidence in themselves often over estimate their experience around this time and look silly to anyone with actual experience. I don't think 40 is some magical number. In fact many experiences that happened over 10 years ago in high tech starts to "fade" and become less relevant.