I disagree with the "tall driver" hypothesis. I'm 6'3", I've been in FSD beta since the first batch of 100's, and I've literally NEVER seen the "pay attention" message. I also commute roughly 30 miles round trip off highway with FSD engaged basically the entire time, 5 days a week, so I'd have plenty of opportunity to have it come up.
Some data points that may be relevant:
- My car is a Model 3 delivered in November 2019
- I've driven lots with and without sunglasses, and during daytime, sunrise/set, and nighttime (haven't tried sunglasses at night for obvious reasons)
- I never wear a hat
- My driving is mostly in suburban/rural areas, including occasional rural drives after dark where FSD has a warning or isn't available because "one or more cameras" are obstructed, when really the cameras are fine but it's so dark to the sides of the car that they can't adequately perceive things
I don't mean to imply there isn't a detection problem for some cars/drivers/situations since I can only share the experiences I've had with me in my car in the situations I see, but I am a data point that is inconsistent with the "tall drivers get false nags" hypothesis.
I have the impression Chuck Cook's problems could be correlated to wearing a hat, and especially if using the hat brim as a visor when the sun is low in the sky. It would be ideal if that didn't cause a detection problem, but it's an explanation for one possible situation that could induce it.