I'm a pilot and was surprised that the Navdy video invoked the "pilots use it -- it's safe" language.
Um, when I'm flying a plane, I don't:
- have other 4,000-lb planes 3' away that I could collide with after a moment's distraction
- compose tweets by speaking aloud while staring at a screen, and then when the voice recognition system doesn't work properly, have to retry multiple times while staring at the screen
- talk on the phone to my mother
- play music while navigating through crowded airspace (some pilots do on longer cross-country trips, of course)
- need to have my airspeed projected in front of me (maybe on takeoff it would be useful)
- have apps pop up notifications directly in my field of vision when I'm trying to focus on one of those 4,000-lb objects that's about to collide with me
- have some of those other 4,000-lb objects near me controlled by people who are composing tweets, etc. rather than focusing on the task of flying
What I do want to be doing is scanning the airspace around me for other planes, scanning my instruments to make sure all is well, etc...
Navdy seems like a good HUD implementation from a technological standpoint, and unlike other folks here I don't think it should be banned. But assuring everyone it's safe because "pilots use it" seems like a statement made without, well, talking to pilots first.