[simen]

It all depends on how safe the OS software sandbox is. Which is something that recent HW vulnerabilities really has emphasized even if you're not running in ring0. And it's not like this is a new idea: as mentioned, Microsoft already built a research OS on this idea.

Personally, I say more power to this high schooler. It's just a research project, and it'll be interesting to see where it goes. Nobody is suggesting you replace Linux/OSX/Windows with this thing anytime soon.

[ratmice]

Even before MS, there was UW/spin os, on the language modula-3, in the mid-90s http://www-spin.cs.washington.edu/