So you want to ban all passenger use of electronic devices, but are OK with pilots using iPads as electronic flight manuals for the entire flight duration? If an iPad is certified as being safe to use in the cockpit, why is it suddenly unsafe when it is moved to the cabin? http://appleinsider.com/articles/12/09/11/american_airlines_pilots_begin_using_apples_ipad_during_all_phases_of_flight
How about a logical conclusion to your argument:
Probability of passengers sneezing during a flight, causing their false teeth to fly out and critically injure a flight attendant as they are walking past with the drinks trolley - Low
Consequence - catastrophic
Effect of false teeth ban on passengers - Minor Inconvenience
Recommendation: Ban all passengers from wearing false teeth during a flight
Personally I do not want mobile phones being used on planes - but that is due to their 'CAN YOU HEAR ME!!! I'M ON A PLANE!!!' annoyance factor, not because of any safety concerns.
As someone who flies at least twice a week on business I just do not understand the logic behind being forced to switch off my kindle during takeoff and final approach, and none of the arguments made so far make any sense to me.