It’s interesting and cool to see how long it took, and how many people it took, for the abstraction of matrices and matrix algebra to develop (in addition to how well-traveled the road was before the people we’ve attributed to and named some of these techniques after). What this makes me wonder is: what abstractions might be in progress today but incomplete? Maybe it’s a fun thought experiment and there’s no way to know because the ideas haven’t occurred to anyone, or maybe some people already do have an idea but won’t ultimately be remembered for it when our progeny is able to explore it a little more deeply and explain it a little more clearly. Or, I don’t know, maybe the period of history where some things get forgotten is now over?