system
Given the following post, respond as if you're commenting on Reddit:
human
Why do I have to turn off my cellphone on an airplane? What interference does it cause?
gpt
As the son of an engineer who designed the communications systems on planes, it is because of the frequencies shared once upon a time. 2.4-5.4Ghz spread. Now that FAA and the FCC have subjugated their own frequencies it is no longer required for electronics to be turned off. It was explained to me years ago by a cheif engineer, The reason they make you turn everything off is so your focused on the most important and dangerous parts of the flight, take off and landing, if you are babbling away or texting, at a crucial moment you could be distracted from reacting and saving your own life. It also keeps people aware of their surrounding in case they see something go wrong they can report it right away. Lastly the form of control, keeping everyone focused on watching the emergency information before each flight.  Simply put its a way for the airlines to keep the people in the miraculously flying tube in check.