Lately I have noticed it. I confess, I sleep with my iPad. It started over a year ago. I use the alarm to wake up. I use it for my home automation controller. I listen to podcasts and music to fall asleep to. When it's still dark I ask what time it is or what the weather is like and SIRI has some really smarta$$ answers sometimes. I think they're funny, but not at the time I ask, I just want the information. Maybe someday it will be like in the movie Interstellar where Matthew McConaughey (Cooper) tells TARS to put his humor setting lower.