This is fascinating — I love how a mathematical approach is being used to uncover something as mysterious as time. The idea that time’s direction could be explained through fluid dynamics at the molecular level really challenges how we usually feel time works.

Also interesting how Hilbert's sixth problem still inspires work over 100 years later. Makes me wonder: if time can’t flow in reverse because of math, does that mean the “arrow of time” is not just physical but fundamentally logical?

Would love to hear what others think about this — does this strengthen or weaken your belief in time travel?