On 20 Nov, 14:34, MIG wrote:
Strange that there is generally better provision for people changing
trains than for people staying on the same train.

In the hypothetical world of the Oyster designers no one ever needs to
do this (and everyone lives near an Oyster retailer, and everyone is
always able to touch in and out, and journeys never exceed two hours,
and no one ever makes a journey outside the system, and so on). Oyster
is a great example of a system that works perfectly on paper but has
no real failure modes.

It's poor design choices caused by poor absolute requirements (eg it
would work a whole lot better if journeys in London were flat rate).

U