It’s awesome for me to find out QNX is message based. It makes sense though - I knew it was a microkernel. It’d be a lot easier to have a solid, real time OS if

It’s awesome for me to find out QNX is message based. It makes sense though - I knew it was a microkernel. It’d be a lot easier to have a solid, real time OS if the kernel is minimal and just accepts/serves requests. Sounds like an interesting engineering project. As for “why posix”. Any OS gains decades and decades of work by simply adhering to posix. It might not be perfect with only that but doing only that does have huge benefits. It might be boring to some, but it’s not like there’s a Windows standard a new OS can easily target and at no financial cost.