You gave an answer that was clearly on the 'too far' side, but you didn't answer the question of where the line was actually at. There are a lot of things in life where it is easy to put something on one side or the other, but where drawing the exact line is hard.

For example, how to tell what species something is. Simple question, right? One only needs to look at a cat, dog, human, or some bird in the sky to easily see they are all different... until you consider the corner cases like ring species. Suddenly the really easy question of how to tell two species apart doesn't always work. Getting the exact answer can be very difficult if not impossible (often because these questions derive from placing human created abstraction onto reality, and often the fit is not perfect no matter how tightly we press down).