I wanted to share an idea which according to me will help Brilliant achieve what it wants to achieve.
As I have seen through my whole educational lifetime I have seen that's its not the technical educations what matters but the creativity. Even then though we are measured upon tests which reflect our knowledge not our potential or creativity. Like many tests, the person who designs the test often knows the answer and the winner is chosen to be the one who seems to follow the path of designer and solves the problem. But that shouldn't be the case at all. In this way the student's potential is limited by the tester. The solution of the other person might have been so much magnificent if he is given time which might solve a more border problem including the given one but was discouraged to follow the path because it doesn't goes through the path what was expected. So, what's the solution? And that's what I think Brilliant is looking for. The main problem is with the tester who thinks that the student being tested has limited capability. Once this assumption is dropped miracles happen.
So, what I am suggesting is that the criteria on which students should be judged upon shouldn't be based on problems that we create but on problems which we facing in the real world NOW. We often never give a chance to students thinking that students might get imitated by the problem or often underestimate their capability because even the brightest minds weren't able to tackle those. There's not many resources these days that are helping students achieve that. For example many students do not have access to problems in physics which current top physicists are facing. I know its a long way for them to be going if they are shown those. But that shouldn't discourage us. Because remember assuming that no one can do this because top grade people couldn't do this is an assumption we need to drop in order to get best minds.
So, I suggest Brilliant to create an interface which throws students directly into the dark side of problems we are facing in this world without worrying about if it would be too much for them.