The one you're too lazy to search?
crapwittyname
Plasma is electrically charged, so it interacts with magnetic lines.
The sun has magnetic field lines just as the earth does. It also rotates. But- since it's not solid, it doesn't have to rotate all at the same speed. The plasma in fast-rotating regions drags the field lines further than the plasma in slow rotating areas, creating weird loops, breaks and reconnections in the field lines. I'm almost certain that what we're seeing in this lovely bit of photography is a cloud of plasma travelling across, or trapped by one of those rogue field lines which has been pushed upwards from the surface by differential rotation.
I think it's 50-50, because the Chinese l sound is pronounced with the tongue in the position somewhere between the Latin r and l sounds. So it's just as likely to be heard as a "wrong" L or a "wrong" R.
The fun part is that the tropes stick to our own way of pronouncing the letter (r becomes l or vice versa) instead of attempting to pronounce the Chinese sound correctly...
They are talking about mathematical proofs here. Once the mathematical proof is complete, we can look at the application, i.e. using it to make predictions and seeing how well they do.