Lets talk about the human knee,

It has a very poor structure, everyone must admit. It truly isn’t a very intelligent design (he he).

Human kinesiologists could easily design a knee which would serve the same function but get better “mileage”. This is true of many natural machines.
They truly are not the best possible design.

Under the light of Intelligent Design, this doesn’t make sense. (I know most believers will just brush off this, but it really is a problem with the theory)

Under the light of Evolution, it makes perfect sense.
Because:
Evolutionary forces don’t “design” organisms, they “tinker” with them.
So when an organism faces a new pressure, natural selection tinkers with the existing structure of that organism (through mutations) and accepts the best solution that Arises.

-if the best possible solution doesn’t arise through mutation, that natural selection cannot select it.
-Natural selection is also bared by it’s starting point. Evolution cannot stop, think things over and start from a different angle to better solve the problem. It must always continue down the same path. This is unlike humans who, when designing something are able to stop and start over again from a different approach, this is why we are able to design a better knee than evolution did.


I post this as just another example of some data which fits seamlessly with evolutionary theory but leaves supporters of intelligent design baffled.