I'd vaguely heard of Uber before today. Now I've downloaded the app. Bloody brilliant. Massive own-goal by taxi drivers.

— Daniel Barnett (@daniel_barnett) June 11, 2014

Yet another example of a historic profession -- with all its attendant ceremony, apprenticeship and apparent barriers to entry -- failing to adapt and probably in danger of being rapidly superseded.

Do we still need the 'knowledge' when we've got Google Maps and Siri?