> If I got code like Joel describes for a code review, I'm sending it back asking for it to be clearly commented.

I'd argue that most code written today is never code reviewed. Heck, most code today isn't even read by another human being, and I'm talking about code generated by other humans! :-)

Most code written today (and most likely most code ever written) is poorly written code.

Now, these days there are many companies with good engineering practices, so there are lots of islands where this isn't the case.