I don't understand what makes this idea so revolutionary. Can you imagine the total forces at play when a school of several thousand fish is moving at maximum speed past a set observation point? Hydrodynamics and aerodynamics are different but closely related. Think about the air disruption when a plane passes at speed at low altitude. At close distance flags will flap like crazy. Consider a sparkling clear small lake and a dead lake. Many differences, of course, but lack of biologic agitation is certainly an easily identified difference of energy input between the two. I'm not saying the proposition of the clip is a foregone conclusion, and it must be confirmed, of course. Still this isn't ...

I don't understand what makes this idea so revolutionary. Can you imagine the total forces at play when a school of several thousand fish is moving at maximum speed past a set observation point? Hydrodynamics and aerodynamics are different but closely related. Think about the air disruption when a plane passes at speed at low altitude. At close distance flags will flap like crazy. Consider a sparkling clear small lake and a dead lake. Many differences, of course, but lack of biologic agitation is certainly an easily identified difference of energy input between the two. I'm not saying the proposition of the clip is a foregone conclusion, and it must be confirmed, of course. Still this isn't going off the deep end into something as radical as when human flight was new.