1) If we're talking about how "useful" it is to analyze Antigravity's memory structure, it's honestly just interesting. Just to satisfy my "curiosity". It's only useful for people who "design memory". Or for people who use Antigravity a lot and are also tired of it "remembering other projects" when it's totally not needed...
2) But if we're talking about the "usefulness" of memory itself... I actually try to clear Antigravity's memory, because I read all my materials very carefully, like 10-15 times. For me, going from an "idea" to "coding" can easily take a couple of weeks. Until I lay out the whole architecture perfectly, I don't give the green light to "build" even a simple HTML article. So for me personally, an agent's "memory" mostly just gets in the way.
P.S. I only used memory in one project, and I designed it myself. I made it very "directed" with strict rules: "what to remember?" and "when to remember?". That is convenient and a good working concept. The thing is, for my current tasks I just don't need it. My own memory is enough.