That's very elegant. It's amazing (and a little terrifying) to think that he may very well have been able to mentally visualize the fluid dynamics to some extent. It's not like he was consciously solving navier-stokes, but it's still incredible what some human minds are capable of.

But then, he was thinking a lot about electron flow and built up a good intuition that had wider application. That doesn't make it any less amazing to me though. I'd like to be able to do that.