[mark_mart]

There is no way anyone in this world will know these machines by heart.

It has thousand components, evolving constantly and has the most complicated technology in the earth.

[brennanpeterson]

Having met the guy...he is pretty close to knowing all the bits at a pretty deep level.

That is part of the heart of asml, people are expected to know things at a very deep level.

[skrebbel]

Multiple knowledgeable senior engineers at ASML have told me how impressively well Van den Brink understands how the damn thing works.

Given how unforgiving the average engineer is when someone in upper management doesn’t understand something (cue PHB jokes), I’m inclined to believe them.