[OJFord]

> I have no proof but it's reasonable to think that would transfer to shorter PHD programs.

I didn't enter one (regretfully) anywhere - but from what I recall when looking, US/Can typically have more of a taught element in preparation, included in the first year or two of the PhD programme.

Sort of like doing an MPhil or something followed by PhD I suppose, but built-in and I assume designed to counter the effect you describe.