> But you can't easily fix things yourself. And for many people, the old kind of engine was good enough. I'm not sure that's a good argument. If you have a med

> But you can't easily fix things yourself. And for many people, the old kind of engine was good enough. I'm not sure that's a good argument. If you have a medical problem, do you try to use it yourself? Do you wish that you were able to fix your computer CPU when it breaks or do you just buy another? If you were to make your car/computer more fixable, it would probably be more expensive/less reliable/...