I’ve decided to try a video blog! My first video is on an amazing and fundamental open question, and is intended for a general audience. I’d love to hear any thoughts you have on this new format! Note: Since this video was created, I have learned of a paper by Aytek Erdil which resolves this question for a particular definition of truthfulness. The question remains open if we use a slightly stronger definition. If you’re interested, read my posts discussing the details of Erdil’s result and the different definitions of truthfulness.