[thrashh]

You know, planning isn't something that is necessarily required or necessarily not required. You plan as much as a situation demands.

Presumably in a smaller society with abundant water, you can wing your pipes because it doesn't really matter. A larger society in a desert? Well, that's way different. Inefficiencies add up too much.

The real trouble is people who just believe in strong rules when really, you should be looking at your specific situation and using your brain.