I suspect this is all about passenger behaviour when they get to the platform at last minute.
Intaxication - the euphoria when you get a tax refund, until you realise it was your money in the first place.
Same thing here - you will dash for the platform, see the doors closing, gesture indignantly to the CSA, who will open the doors again, and you will feel better. And then the doors will close and the train will leave on time.
The same bad behaviour will still happen, only a minute earlier.
I would much rather that the train leave exactly on time and we deal with people who can't accept that they were 15 seconds too late.
- Paul