As a long-term "enthusiastic commuter" I (along with the majority of forum members) have always assumed that, if your ticket says "Any Permitted" you can travel on any permitted route. To me, that means you'll be alright unless you're taking the mick. But this morning there was a woman at Stevenage having a serious argument with staff. She obviously had been stopped for having an invalid ticket but the crux of her argument was "My ticket says that ANY route is permitted". Do many people fall foul of the difference between "Any permitted route" and "Any route permitted"? Taking a step back, it's not obvious from the ticket.