As I said complex behaviour would benefit from computing. I don't see car wipers having complex behaviour that they would need computing to implement it. Also the complexity of the behaviour is a spectrum and not just a on or off thing. You need to consider all the various properties to figure out the best balance in the solution you come up with. On the industry side of things, companies will fit everything with computer and sell it at higher cost coz thats what their goal is i.e to make more and more money, they don't care about the best solution, all they care about is how they can sell expensive solutions and use proper advertisement to portray their solution as the best one (even though it is not).