I've never had time to watch the YTs, I just recall them being "I build a filesystem in 45 minutes" or something like that, where the resulting code can't possi

I've never had time to watch the YTs, I just recall them being "I build a filesystem in 45 minutes" or something like that, where the resulting code can't possibly be anything close to a production OS with all the error codes and wrinkles properly handled, to say nothing of documentation and test batteries. Is Serenity OS a bunch of parlor tricks, and is it a UNIX reimpl, or is there anything interesting in the underlying OS design (micro vs macrokernel, userspace vs kernelspace, everything-is-a-file-Plan9, shell design, etc)?