Still wearing his headset, Greene opens up the floor for questions. One student, from Denmark, asks, “How does it feel to be teaching in the next step of education?” As Greene answers—about how it’s so wonderful that people from around the globe can gather and share complex ideas like this—a student flings a virtual tesseract at the teacher’s head. Next step, indeed.

https://www.wired.com/2017/06/string-theorys-weirdest-ideas-finally-make-sense-thanks-vr/