We do select for a more resistant wing. How did we determine that this wing is more resistant? We modeled its bending tolerance and selected this particular design against other designs that had worse evaluated results for bending tolerance.
First, how did we model the bending tolerance if everything is just randomness?
Second, there are other algorithms that constructively find a solution and don't work at all like genetic algorithms, such as mathematical solvers.
Third, sometimes, a design is also simply thought up by a human, based on their own professional skills and past experience.
Yes, and it was an intentional process.
Natural selectiom:
- is not an intentional process
- does not find "the strongest the fittest the fastest etc."
And that, my friend, is just engineering, like I said above it's an iterative process. There is no "natural selection" from random shaped wings