I'd venture that 2-3 hours is far too little for someone to learn the topics you list from the ground up. But I'm just nit picking :). Your point is well-taken.

I'd venture that 2-3 hours is far too little for someone to learn the topics you list from the ground up. But I'm just nit picking :). Your point is well-taken. But one big problem is that these are unknown unknowns for many people. Suppose a new but intelligent programmer finds Node and wants to decide whether it's good for some new project. How would that programmer know what to look up? How would s/he know that, e.g., user vs kernel space is even a relevant concern in the decision to use a single-threaded, event-based framework?