"Don't worry about what anybody else is going to do… The best way to predict the future is to invent it. Really smart people with reasonable funding can do just about anything that doesn't violate too many of Newton's Laws!"
Reporting in the journal Nature Physics, William Irvine and Dustin Kleckner, physicists at the University of Chicago, describe the knotted fluid vortex they created in the lab — a scientific first, they say. The knots resemble smoke rings — except these are made of water, and they’re shaped like pretzels, not donuts. Understanding knottiness has extra-large applications, including untangling dynamics of the sun.