Insight from a NY Times article on how the Internet can be accessed from flights: the reason you shouldn’t use a laptop on a flight during take-off and landing is not because of electrical interference; it is that the laptop could be a dangerous loose flying object in case of turbulence. Now, that makes more sense.
Internet on flights
I discovered that airlines restrict laptop use during takeoff and landing primarily because they become dangerous projectiles during turbulence, rather than due to electrical interference. This safety explanation is much more logical than the common interference myth.