Re: Minor nitpick
Probably to leave a gap between the rotors for mounting and dismounting. You need 8 rotors to have a modicum of engine out capability (6 rotors allows semi controlled flight without yaw authority for a "one out", 8 rotors allows full albeit reduced control in a "one out" and depending on which engines possibly limited controllability in a 2 out scenario)
Biting the hand that feeds IT
