[philwelch]

Basically, "biological" describes a system that works decently, and which has grown through incremental changes, and yet is a poorly architected mess inside. It describes something that appears to be great from the way it works and the way it looks on the outside, even if the internals are a mess that require 10 years of schooling and residency to fully understand and maintain ;)

[stcredzero]

Not even that! 10 years and continual refresher courses and on-the-job training for a lifetime -- just to have an inkling and at best a hazy but uncanny knack for fixing. But even this is not even enough in all cases.