The Physics of Space Time

If space time is a fluid, then it has to have like very, very slight fluid effects. So we do have an experiment or an observation. At least it says that space time is not a fluid,. Then it might still be a super fluid, but it's definitely not a fluid. We can rule that out. But there's sort of another direction we can approach this, which is to try to do experiments on Earth to understand whether this theory even holds together. And as a guy in Israel, the Technion who builds these sonic black holes, try to understand how gravity might emerge from a fluid theory of space time.