[PatrickHenry]

For some strange reason this ominous designer only reuses code that's been inherited from previous versions but never code from other unrelated 'source code' which means that he has to "reinvent the wheel" quite often. In other words, if you look at the work of this "designer" you get a treelike structure whereas if you examine the way humans usually design things, you get more of a spider's web.

[Consulting my Magic 8-Ball ...]

The answer is simple, you godless, materialist, commie, sodomite, kiddie-porn producing, lake-of-fire-bound fool. The Designer, having done His Glorious Work, then assigned further Designs to Teams of Designers, giving each such Team one of the Designed Kinds to work with. The Designer Teams obviously don't share their coding secrets with each other. You will learn these things, eventually, but it will be too late; I laugh at your fate.
</creationism mode>

[grey_whiskers]

For some strange reason this ominous designer only reuses code that's been inherited from previous versions but never code from other unrelated 'source code' which means that he has to "reinvent the wheel" quite often. In other words, if you look at the work of this "designer" you get a treelike structure whereas if you examine the way humans usually design things, you get more of a spider's web.

He must rely on Java or C++ and use a lot of class inheritance.
(Programmed with evolutionary algorithms no doubt? Or else much of the development was outsourced and written in Visual Basic to boot.)

(Ducking for cover, running for exits through a veritable hail of flying vegetables and other disreputable organic debris.)

Cheers!