A fair point. I don't recall how much if any I documented what I learned at that time. This was when I was still an undergraduate. We didn't have a wiki or any great documentation sharing system. I probably sent a mail to our mailing list and anyone who wasn't subscribed at that time never got it. These days I spend oodles of time writing documentation for my peers.

To be clear, my point wasn't "develop some specialized knowledge and then hide it", it was just "develop some specialized knowledeg". And yes, sharing it with your peers is a good choice, but if they were scared of the issue to begin with, they may not all be very receptive to learning about it.