You guys all come up withgood points as to why evolution is important outside biology, but one point at least remains. I have thus taken it upon myself to present it in the absence of better qualified people.

Take a look at cars for instance.
They evolve, with the prime factor for survival is not how easy it is to get food (fuel) but if the car can gather up prey (humans).
Quite simply cars hav had many many dead-ends. Cars that couldn't cut it and died out, other more suitable cars took their place. It even fits that even the old successful breeds, such as Ford T, eventually almost died out, to the point it didn't reproduce anymore. The simple fact is that at a point other cars were better than the Ford T.
Not satisfied?
Take a look at American cars compared to Japanese and Europeans cars. The former are generally bigger, longer and heavier. This was born out of the often lacking roads and open spaces ofteh early 20th century. Meanwhile in Europe the roads were slim, and the cities extremely dense. There was no room for big cars. In that habitat the small Fiat 500 was top dog for a while, it could get into even the smallest alleys. Was it comfortable to travel long distances in? No, so it didn't do too well in America, where its prime advantage was unimportant, and its disadvantages a severe drawback.

Those cars have evolved from pretty much the same creature. The engined carriage, but the different habitats forced a fork in the evolution of the car.

The same can be argued about tanks. There too we find many dead designs, tanks that didn't survive as a concept.

The main difference is that the cars and tanks don't evolve themselves, but the principles as to survival are the same.