I’m not sure it’s as cut-and-dry as you suggest. Suppose you have to hold down a button to keep a meat-slicer blade moving. Then, as you slice a piece of meat,

I’m not sure it’s as cut-and-dry as you suggest. Suppose you have to hold down a button to keep a meat-slicer blade moving. Then, as you slice a piece of meat, the slicer blade suddenly flies out and strikes a nearby customer and injures them. Later, it’s discovered that a faulty design or a manufacturing defect cause the blade to fly out. There’d still be a very good case that the manufacturer would still be liable for the defect. Now, here, maybe the user could have prevented the car accident by letting go of the button. But, what if the user had faith (however misplaced) that the car was going to avoid the collision until it was too late to let go? Or what if the user had suffered a stroke at that particular moment and couldn’t let go? It’s an interesting thought experiment.