Role of politicians in these scenarios is to set out cases to people about short term, medium term & long term goals. The long term will always include them as part of a society as a whole. The important parts: presenting range of evidence, resources, time to consider, balancing minority needs

It's imperfect and it won't solve all disagreements but it's a vast improvement from what we've got. It certainly starts to mitigate against contracts being given which go over budget, over time, to poor performers delivering poor outcomes