> By the end of an undergraduate degree every physicist should end up feeling like they know nothing about physics.

You couldn't have been any closer. I emerged feeling extremely stupid after doing physics at uni. My rather mediocre marks didn't help...

LOL to be honest I'm more scared of the people that it doesn't happen to. At first I feared them because I thought they knew so much more and it meant I was so far behind. But later I feared them because I recognized we were at not too dissimilar levels and the main difference was recognizing how far left we have to go.

I don't fear the man who knows more than me, I admire them and only have something to gain by admitting my ignorance to them. But I do fear the man who believes he knows more while in reality he doesn't. Nothing productive comes from them as they don't even recognize the journey we are both on.