More display flickering

I had another automatic backlight control issue this morning.  A cat hair was laying directly across the camera lens, which was making the display flicker - especially at the top of the screen.  Apparently, the part-dark, part-light image going to the camera was really confusing the backlight dimming algorithm.  I removed the hair and the flickering stopped.  I'm not sure the automatic backlight dimming is worth the problems it seems to have with bright lights being periodically blocked by shadow and by things like hair or dirt getting on the camera lens.