Pinpointing and accidents

When you're sitting on the passenger seat, you point out what the driver is doing wrong, like he/she is going too fast or too slow but when you're behind the wheel, do you like to hear your errors being pinpointed out? Nope, none of us likes that, it's a whole new dimension when you are sitting in the passenger seat and when you're behind the wheel. Some of us don't realize this but this pin pointing can at times lead to  accidents if an argument arises.