Yes, they are components in a machine, and if machine is generating N dollars per second, it doesn't mean that they are generating it. It's also perfectly reaso

Yes, they are components in a machine, and if machine is generating N dollars per second, it doesn't mean that they are generating it. It's also perfectly reasonable to try to find components as cheaply as you can, and don't always go for highest-quality components if it doesn't have a significant effect on how machine is functioning.