Entering the world of WHAT IF is there anyone you would have LOVED to have worked with professionally?

Mine would be that I'd be a quantum physicist and work with Dr. Stephen Hawking. I know. How much grander a WHAT IF could I have than that? Of course I'd be honored to work with Albert Einstein too. Such are the things dreams are made of. Exploring the universe with geniuses? Who could ask for anything more? Your ask would be? Why?