Star Wars vs Kennedy

NASA engineer criticized the rebel robot from Star Wars

Jet Propulsion Lab engineer Brett Kennedy, engaged in the development and creation of drones for NASA, criticized the BB-8 robot from the new "Star Wars"
He said that the design of the robot is unsuitable for conquering other worlds.
Quote:
“Having a single wheel, you will be stuck on the very first bump, and since BB-8 is two inches from the pot, it simply will not have enough height to overcome such an obstacle. Not to mention the fact that with such a technical solution, the robot needs a flat surface to move. And which planets can boast of this? "
Then he cited the famous R2D2 robot as a positive example and said that the Jet Propulsion Lab has the ability to do the same.