So, this is all my opinion, and I openly acknowledge that my views are not in line with most people in the magic world.
There's a difference between asking what a specific trick is, and asking about a premise or set of resources. For instance, this one - You can ask "How did Ramsay know this guy's code?" Or you can ask, "What are some resources to learn this kind of thing?"
The first question implies someone is trying to solve a puzzle, either to satisfy their own curiosity or to copy the video. ie: Either they just want to know, or they want to know so they can do the exact same thing.
The second question indicates someone's going to explore the concept, find a variety of methods and presentations, and build their own thing from there.
The difference between the two is the maturity of the approach. Most newer magicians I see, ask the first question. Developed performers who have a solid idea of who and what they are, ask the second one.
Personally, and I know I've said this a lot, I don't like the idea of doing what other people do. I want every routine I do to be unique to me. So when I get interested in something I gather as many resources on both the premise I'm using and the method as I can locate, and study them all. I break it all down, and build my own thing from the ground up.
I don't know the specific method Ramsay used in that video - but I know I could divine someone's PIN code with one of a half dozen different approaches, because I did get interested in the idea at one point. So I checked out many different methods and I have those tucked away in my mind for future use.