Macroscopic models are crucial. Imagine trying to understand water flow in terms of brownian motion or turbulence, instead of "downhill". Similar for heat flow.

Macroscopic models are crucial. Imagine trying to understand water flow in terms of brownian motion or turbulence, instead of "downhill". Similar for heat flow. We'll need such models to understand neural activity. That's not to say that lower-level models are unimportant... or that we have the correct macroscopic model. re title: click-bait titles are why tl;dr's should be encouraged. It would be interesting to have frontpage-like voting on better titles for each story.