Steve,

"In one telling incident, a flight crew stated that a 30-degree navigation
error was immediately corrected after a passenger turned off a DVD player
and that the error reoccurred when the curious crew asked the passenger to
switch the player on again. Game electronics and laptops were the culprits
in other reports in which the crew verified in the same way that a
particular PED caused erratic navigation indications."


The word for that is "anecdotal evidence".

--
Thomas Borchert (EDDH)