I wouldn't say every "car incident" is avoidable by paying attention, it's just that the ones that aren't tend to be one in a million incidents.
Something weird like a small object skipping of the road, ripping your brake line, you don't know anything happened because there wasn't a jolt or indicator light, then a deer runs out in front of you, you swerve to avoid it and crash into a Tyrannosaurus Rex that escaped from Jurassic Park.
Something weird like a small object skipping of the road, ripping your brake line, you don't know anything happened because there wasn't a jolt or indicator light, then a deer runs out in front of you, you swerve to avoid it and crash into a Tyrannosaurus Rex that escaped from Jurassic Park.