When you’re a genius, you tend to notice things that others don’t. Nikola Tesla did. He envisioned the potential of electricity far before his contemporaries. So, is it possible that Nikola Tesla’s 3 6 9 theory of the universe holds water? Or is it merely evidence of Tesla’s obsessive nature? Tesla’s 3 6 9 obsession began with his fixation on the number three — and suggests that three, six, and nine could hold the key to the universe. The theory has been co-opted and expanded upon even today by people who hope to improve their lives by “manifesting” their desires by repeatedly writing them out.