Memristors are really interesting. They are a fundamental electronic paradigm - up there with transistors, resistors and capacitors. They are a fundamental building block.
They have some really interesting properties that map to maintaining some kind of “memory” based on previous electrical inputs. Does that ring a bell? Sound familiar?
If you have a few minutes: https://youtu.be/bKGhvKyjgLY?t=168
Memristors allow you to model a weighted input with the ability to change the weighting and doing it without power at (in the future) high densities – millions or billions per mm2. That’s the hardware for the HTM software.