You're welcome. I think he's a deceptively clear thinker, by which I mean, DHH tends to supply a correct and insightful answer without discussing all the potentially wrong ones, or even unpacking all the insights contained within. It's left as an exercise for the student to realise how any particular "road not taken" would've been inconsistent with Rails's underlying principles.

I don't mind that, since I've chosen to infer an assumption that we're all as smart as he is. (even if it does then take me years to explain things to myself...)

If you didn't find it already, his "On Writing Software Well" video series is a fascinating, and sadly abbreviated, journey into his own application code.