A physical sandbox
The last article about agile city planning was the joy of agile.
Now, we are in R&D mode, trying to learn how to create custom made platforms for the shadow station and the branch-line.
As this is something completely new for me, I've created a small diorama for experiments, e.g. a sandbox environment where I can learn, without messing up the larger layout.
This is the same reason, why you need a sandbox environment when doing something new with IT. A safe place to try and learn without messing up the large systems.
You can try new concepts within a limited cost, and scrap if it doesn’t work.
The same principle applies regardless it’s for creating contract tracks for feedback or doing an event based integration. If you haven’t done it before, you need a learning environment.