A fascinating piece of trivia I was not aware of. To me it seems reasonable that instead of trying to reinvent the whole shebang that instead you get these incremental changes over time that just make an OS really really good.

OS X too a lot of getting used to for me as a kid, as I had an old mac clone and an iMac with 10.1 side by side in my living room, and I loved my little mac clone. OS X didn't immediately win me over because I was just too used to OS 9 and had everything I needed on my offline mac clone. But I distinctly remember Spotlight being what really sold me on OS X because from the get-go it worked basically as intended, and man was it magnificent. If the author of Spotlight is on APFS, I have a lot of faith in it then.