Except you actually want them to learn a lot, not just a little: it starts with one very specific bit of information, but then you realize that in order to understand that, you need four more bits of knowledge, but each requires six more, and those each require two more, but those in turn require four more, and ... you get the point.
The same way you start with a simple question: "If I have a logo in Great Britain that kinda looks like this other one in Massachusettes, is that okay?", and it snowballs pretty quickly into a full-blown research on common law including the 1528 case of Jane Doe v. Henry VIII and the 1796 case of Smith v. State of Massachusettes before you say eff it and instead go to a qualified lawyer.
You don't see this in action, not very often, because by the time they enter your world, people have already learned this, and head the entire process of with the phrase "It's not my problem, I don't really care, just make it work!". And it's true, it's not their problem, it's yours - that's why they pay you instead.