Here's some other senior dev's list: Don't know: start with Dan's list, it has many similarities. I know more Bash, but not enough to write a shell script more

Here's some other senior dev's list: Don't know: start with Dan's list, it has many similarities. I know more Bash, but not enough to write a shell script more complex than my aliases file. I vaguely know z80 and 6502 assembly. I know Java extremely well, but am faking C++ and C#. I understand flexbox but not CSS floats. I don't even know what sockets and streams even are in this context, they don't sound like the sockets and streams I know. I don't know node. I do know graphics and algorithms. More don't know: the only front-end frameworks I know are Backbone, raw javascript, and various immediate-mode graphics APIs. I barely understand the AWS services I use. I don't understand matrix decomposition and that's actually relevant to things I do. I have to look up basic SQL commands when I'm writing it. Do know: graph search algorithms in excessive depth, sequential Bayesian filtering in excessive depth, most of 2D graphics, 3D graphics up until you need to sample the local region in world space, most of procedural terrain generation, 2D computational geometry, 2D physics, sensor error characteristics for various sensors, GPS from the high level down to pseudoranges (but not down to signal analysis), rather a lot about data formats and compression, video game networking models The "do know" list isn't exhaustive. The "don't know" one even more so.