There is a way to win roulette without any knowledge in roulette whatsoever. The simplest way is to find the people who are professional and bet behind them. How to do it? Using a detective mindset, these professional players must have won and people have seen them won. I have browsed some Facebook groups, roulette forums, spoke to casino staffs, all leaves crumps and evidence behind while they win, even though how well they do their disguise because as someone win money and not neccessarily big money, people tend to remember them. If let’s say you have a supercomputer which the NSA, FBI, CIA uses, which they can filter out comments on social media with keywords and speak to those who have witness these players win which seems unusual, create a community, track them down, then you can build the puzzle together and figure out how they win, where they usually play and bet behind them. It is not really rocket science. If I can think of this, so does other people. In fact, I have uses these methods to refine my playing model.
however, if you are not knowledgeable enough, you won’t be able to identify who is the scammer and who is the real deal. The real deal you will see him win in casino.