I think I'm missing something. What's the difference between Cashu and Sats? Are we talking about something like a stablecoin, with value of a unit = 1USD, or ... I don't get it...  Sorry, I've been seeing a lot of talk about how exciting it is, but not enough about WHAT it is.
What am I missing?  And yes, I've read the FAQ.  I'm not seeing an answer there for some reason.