Flawed Doctrine or Flawed Strategy?

[Kiwigrunt]

.....The generalized knowledge between two near-fields in depth is often much more utilitarian than the specialized knowledge at the surface. I once read a great piece illustrating this principle. Four hours training in how to use a blade screw driver is better than an hour on a phillips, an hour on a torx an hour on a blade, and finally an hour on an allen key screwdriver. They all work pretty much the same.

Am I pushing my luck to ask you for a link (or reference) to that piece?
I'd be very interested in reading it (I think). Totally off topic here but the potential learnings from it may have some relevance to my trade and industry and where its going here in NZ.