> people will keep traveling long after they exhausted their ability to pay attention, and/or keep reasonable distance from the next one in the front While thi

> people will keep traveling long after they exhausted their ability to pay attention, and/or keep reasonable distance from the next one in the front While this is true, we haven’t stopped selling knives because a few people use them irresponsibly. By the same token, we shouldn’t discount infrastructure because a few people drive when they shouldn’t.