I'd express my long term concerns slightly differently Lemain.... I think most people will continue to learn traditional navigation... its just that they'll never use it.... why would you if you were new to sailing today?... and then when they do need to use it, they'll have either forgotten how to do it, or will remember, but find the uncertainty very very discomforting!
-------------------- Bored?.... why not read my blog .... its the developing story of the trials and tribulations of boat ownership!