Full agreement the above sounds silly. So really it comes down to line between the responsibility of the consumer, and the duty of the product creator to say wh

Full agreement the above sounds silly. So really it comes down to line between the responsibility of the consumer, and the duty of the product creator to say what the product can or can not do. If you really care about replacing parts in your car like the satnav, should you need to do research before buying instead of assuming it works that way? Or should we have rules that all sat navs need to be replaceable so consumers don't need to do that? I honestly can't draw the line myself, I just try my best to identify what I want in a product before purchasing. Especially huge purchases like a car.