But i work, i just not sending my work to guys from the course. That’s all.
And also validation is one of the main thing that professional should know. As said one of my math teaches in the university “If you don’t know that problems is solved you are not the mathematician”.
So basically there is no need in validation from other people, you know when you are not right and know where to find answer. Basically this is the main job of any programmer.