Not worth a response in its own right, however, delete Mitty, insert McCarthy. We cannot go through life diverting (threads included) from technology because of one-percent hypothetical risks (although I admit margarine is off my shopping list).
james michael, I will accept that answer as your way of saying that you have no way to rebut the scenario. (I'm a bit mistified where the one-percent came from ?)
Speaking of banks again - isnt the ASA long term goal to get rid off most non GPS nav-aids and put most of its eggs into GPS based nav, etc ? ...and I wonder if after a few years - all non GPS nav-aids will go, probably radar to ? ...it may-be like airport privatisations (not related to ASA), promises not kept.