Why Reuse Design?

ID supporters often claim that "it makes sense that a designer would reuse a design that works". But why does it make sense? Why not start from scratch and build a whole new design each time?To get to the bottom of this conundrum I would like to ask the hoi polloi the following question: why do humans reuse designs?

So one reason that humans reuse designs is that we have limited knowledge, for whatever reason. Do you agree?

The second reason given thus far is that humans are limited by time.So thus far we have limited knowledge and limited time as being factors as to why humans reuse designs.

Ultimately, that is the question. Thus far, the only reasons that humans do resuse designs is because we have limited knowledge and limited time. If you are going to claim that it makes sense that the designer would reuse designs then the designer must also be limited like us, having limited time and limited knowledge.

Can you give an example?

One of the most basic examples is the relationship between the amino acid and the anti-codon in a molecule of tRNA. Here is a picture of one: Now, can anyone tell me why the tyrosine residue on one end has to match up with the GUA at the other end? I can't find any reason whatsoever why this relationship must exist. It is arbitrary. So for each separate creation there is no reason (other than limited knowledge, limited time, and limited resources) that anyone would reuse this relationship.

So why is anything reused, right down to codon usage? Why is novel design limited? There are no organisms that have been started from scratch. All life shares common characterstics, or for this thread reused designs. Why? Is God not capable of making an entirely new genome with new codon usage as easily as God could change a genome by 2% to make a slightly modified ape like us? It would seem that for a being with infinite knowledge and power making a 2% change from a chimp would be just as easy as building everything from scratch.

IOW, we see modification of previous designs instead of designing from scratch. The bird wing is a modified dinosaur forelimb. The bat wing is made up of modified mammalian phalanges. So on and so forth. So we see that reuse of design also falls under another level of restriction, that of a nested hierarchy. Even humans do not restrict themselves to such a rigid pattern of design reuse. It would seem that the supposed designer is even more limited than humans.

Which gets me to the point I was trying to make. When ID supporters state that "reusing design makes sense" they are taking a anthropic view, not a God-like view. It is my opinion that this anthropic view is actually the antithesis of the the God-like view where it concerns design. The anthropic approach to the question of reuse of design is based on the differences between humans and deities (at least the omnipotent and omniscient ones).When ID supporters claim that reusing designs makes sense we should challenge it. It doesn't make sense, at least for an omnipotent, omniscient designer that resides in a realm outside of space and time.

Why does it apply when considering an all knowing and all powerful deity who resides outside of space and time? Surely God knows of millions of completely unrelated designs for any given niche. Since God resides outside of space and time he has all the time in the world to make these designs work before realizing them in our universe. Why doesn't it make sense? For an all powerful and all knowing deity who resides outside of space and time starting from scratch takes the same effort and reusing a design. So why reuse design when starting from scratch requires the same effort (which is none either way, you would think).Or is God limited in his powers in some way? Was God under a deadline? Does God lack and imagination? Does God have limited resources?

Does God have a limited bank account? It goes beyond that. tRNA's with different anti-codons require the same amount of energy to construct and use. So why use the same anti-codons for methionine tRNA across all life? Why would an all powerful and all knowing deity need to reuse anything?From an evolutionary standpoint it makes a lot of sense, but I fail to see how the "common designer" paradigm makes sense when talking about an all powerful designer.