I'd say that simply because something is rational doesn't mean it can be codified into a computer program (yet). (Maybe my example code disrupted my point more than helped.) The design of most computer programs is rational, but a computer isn't sophisticated enough to program itself.
I'm actually having trouble thinking of an important human endeavor this was not in some way rational. Maybe some `Outsider Art` created by mental patients? Programmers who work in `BrainFuck` or `LOLCODE`? I guess I'd only think of something as irrational if I thought a reasonable person would not come to a given conclusion based on the same inputs (such as knowledge, skill, experience, etc).
I'm actually having trouble thinking of an important human endeavor this was not in some way rational. Maybe some `Outsider Art` created by mental patients? Programmers who work in `BrainFuck` or `LOLCODE`? I guess I'd only think of something as irrational if I thought a reasonable person would not come to a given conclusion based on the same inputs (such as knowledge, skill, experience, etc).