I made it through the first 28 minutes of the video. Nothing of substance. Perhaps there's some grand point he made at the end, but there's no way to represent negative infinity in most programming languages.
Anyways, it's often like this with these experts, some are so far in their own worlds, they no longer have any notion of what other people understand, so they either over or under shoot the complexity of their talks drastically. Complete with a trivial mistake where max is replaced by min in the numerical application, à la Grothendieck's prime 57. At least this chap wanted people to understand his talk.