Nobody grasps the complexities of financial markets. Everyone is just along for the ride. If anyone grasped the complexities, they would either be able to solve the current mess or be able to tell it is unsolvable. Instead, everyone is handwaving, guessing and trying whatever ridiculous thing they can to keep the system from collapsing.

There are a few that have found how to profit from what's going on: not because they understand how the system in general works, but because they understand some minor parts a bit better than others.