Though not as much in my last job, because that is what we all did, but you cannot understand how many times I've "fixed" something that does not need fixing. How? By using my eyes (rarely even my brain).
Hand eye coordination goes miles for actually doing something. Oh, that and thinking about what you are doing.
Like removing the "stuck" TV stand legs yesterday... you know, the ones with the push button on for quick release right there on the stand no one else could see.