Now, I got this from a very reliable source, an encyclopedia to be precise, so I know it's correct and goes according to the Einstein velocity addition formula. My question is, why? Question 1: Is it because a person can never "perceive" something coming at them faster than the speed of light? Question 2: Assuming there are people in these theoretical ships, looking at eachother, and the ships are traveling directly at eachother...Would the two ships crash before a person in one of the ships 'sees' the other ship hitting it (say, 1 cm away)? Sorry if these questions are unclear, I don't have a big vocabulary of physics terms.