On 30 Apr, 19:39, David of Broadway
wrote:
It's illogical to reduce the cost of a single trip from £3.50 or £2.00
to £1.80 or £1.00? It's one extra transfer and only a few extra minutes.

TfL aren't interested in enforcing routings. Therefore all journeys
are assumed to be by the most logical route, and charged accordingly.

It's also a roundabout way of making sure orbital journeys are charged
proportionally to their length (ie long journeys are assumed via Z1 so
cost more), which would otherwise be impossible with radial zones.

U