I kind of think if we went back 30+ years and said 'lets start on open OS' it would likely be a good idea to start with a more micro approach. However the whol

I kind of think if we went back 30+ years and said 'lets start on open OS' it would likely be a good idea to start with a more micro approach. However the whole debate is totally different today with BPF, library kernels, uni-kernels, OS virtualization (containers) and so on. The much more important need to run memory managed languages on top as well. Of course all of these questions are not totally new, as always in computing it just new spins.