[PaulDavisThe1st]

... and also a previously kernel implementation called Helios to provide a lot of the lowest level code. Not trying to knock down the accomplishment, but DD is pretty open about the fact that a lot of the speed of this project was dependent on having done Helios first (and reusing code from it).

[palata]

...which is part of the "experience and talent built over years", I guess? :-)