[r-johnv]

I guess his area is really close to my field (Mechanical Engineering + Robotics) so what I learn from his videos is less the concepts themselves and more the interesting examples of them in the real world.

For example that hydroplaning is a real consequence on runways; or that higher takeoff weight has an order of magnitude greater effect on runway wear than the shear force of braking during landing.

I also learn from Grady's phenomenal skill at communicating technical concepts from our field in layman accessible terms! Most times I prefer to watch his videos and appreciate what he does, but there are days that I'm in the mood to read rather than watch. I'm glad that he gives us that option.