Well, that's a bad example ... The can opener I had for the first 50 years of my life left a dangerous crazy sharp metal edge around the opening which I cut myself on more than once. The Oxo can opener I've had for the last 10 years rolls the edge as it cuts and removes the entire top of the can; what's left is extremely safe, at least by comparison with the old style.
Then again, when I was much younger, I had a backpacking can opener that was useful when hiking in places where sometimes buying canned foods made sense. It was about as large as a very large postage stamp, and crazy good for the size and weight. I wouldn't want to use it at home (much), but it was awesome when I had to carry it around.
So, even for can openers, the story can be complicated.
Also, assuming that the primary purpose of an F350 is towing is ... interesting. Lots and lots of them here in rural NM (as much as anyway, anyway), and they are rarely towing anything.
