[weinzierl]

In computer science we are taught it's turtles all the way down but in the real world you learn that you hit the world of bits and bytes really fast.[1]

My point is that every virtualized environment needs a layer that talks to real hardware down below. We have enough diversity in the upper layers but not enough in the lowest layer.

[1] I heard it expressed like this from an Azul Systems employee first, but unfortunately don't remember who it was.