As others have said, I don't think I fully understand a whole lot! But let me think of it this way: Of all the topics that I know stuff about, which one do I th

As others have said, I don't think I fully understand a whole lot! But let me think of it this way: Of all the topics that I know stuff about, which one do I think has the biggest delta between what I know and my co-workers in the same space? I'd say cryptography. I'm not an expert by any means, but even among my co-workers, I find myself explaining a lot of basic concepts before even getting into the gritty.