Knowledge is local in the economic system, meaning that the centre of that system can never actually access all of the required information — most certainly not in anything like a reasonable timescale — to be able to plan effectively.
Unsaid but implied is the idea that, given the tossers who get elected to do the planning, a central planning system wouldn’t work even if the planners themselves worked as hard as they could. But the real killer point is that we simply don’t know what it is that we’re trying to plan.
What actually is the algorithm? What is it that we’re trying to optimise with our plan for the economy? Tractor production has rather gone out of favour as a measure of human happiness, so what actually is it that we’re going to try and maximise the output of?
The standard answer is that we want to maximise human utility, which can descend into a form of madness where economists try to measure utility, although the concept is sound enough. But what the buggery is that? What blend of shiny-shiny, bling, housing, hip-hop concerts and smoked salmon actually maximises human utility as a whole?
As befits one honoured to write for El Reg, my desire for shiny-shiny is reasonable while my demand for bling, zero. I live and work in two separate countries, so my housing consumption is higher than many; smoked salmon is merely an interesting treat; and hip hop (in concerts or otherwise) provides me with negative utility. That mixture will be different for each and every one of us: I’m sure we could find several hip-hop fans among the commentards who enjoy jiggin’ wiv da beat.
In fact there are 65 million different mixtures of what contributes to human utility, in a country of 65 million humans. Don’t forget that as prices change, then so does each and every one of those utility functions. They also change as technology changes: what rational planner would have predicted the success of the iPhone back in 2007?
So, in theory, we don’t and cannot know what the hell we’re trying to plan.
Tim Worstall, “Gov’t control? Hah! It’s IMPOSSIBLE to have a successful command economy”, The Register, 2014-08-13.
August 3, 2015
QotD: The impossibility of central planning
Filed under: Economics, Government, Quotations — Tags: CentralPlanning, Happiness, Socialism — Nicholas @ 01:00
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