Ah, the Ryanair approach. But unreliable arrival times are annoying for passengers and a drain. Sure, build in a small amount of slack, but a functioning train system should be able to get to 90% punctuality without adding 15 minutes of slack everywhere.
I have this same argument with my spouse. If fifteen minutes late is “on time”, then change the arrival time and just be on time.
Ah, the Ryanair approach. But unreliable arrival times are annoying for passengers and a drain. Sure, build in a small amount of slack, but a functioning train system should be able to get to 90% punctuality without adding 15 minutes of slack everywhere.