Worse yet, programmers who could actually benefit from an article like this (i.e. programmers who shouldn't be programmers) won't understand it. E.g. "(Functional) Creating multiple versions of the same algorithm to handle different types or operators, rather than passing high-level functions to a generic implementation" - a bad programmer won't understand what is meant here, so he will simply skip over it and not get the hint.

Finally, I find the notion that you can't be a good programmer if you've never really used Lisp laughable.