Along with ‘Inequality’ and ‘Democratic socialism’, ‘Sustainability‘ is one of the words that captures the essence of my generation. A sustainable project, event or business is met with “wow”s and “oooh!”s, an indicator of its owner’s moral righteousness and altogether praiseworthy character.

But its meaning is far from clear from all but its most fervent supporters. Dealing with the extraction of resources, the use of ecological reserves or harvesting of crops, a process is allegedly ‘sustainable’ if the naturally occurring regeneration exceeds the current levels of extraction. Simply put, don’t use more than what is (annually?) renewed. Moreover, a process branded as sustainable usually involve a mix of some other virtue signalling activities of our time: carbon emission neutrality or offsetting; at least a superficial concern for one’s environmental impact; energy produced in ‘renewable’ ways (read: nothing but solar, wind or hydro); or the use of recycled materials.

If this sounds unobjectionable and self-evident to you, this piece is for you. Despite the fancy branding, the SDGs, the fervor of self-proclaimed do-gooders, is the ‘sustainability’ of an activity really what we care about?

There are at least two major confusions with the assessment of activities as sustainable or its despised opposite: unsustainable. First, and most frequently occurring, is the belief that we aim to pursue our current endeavor in the same way for all eternity. If you think about it, the indignant objection of unsustainability is often quite meaningless, worthy of nothing but a ‘so what?’ response; everything we do at any given moment is in a sense “unsustainable”:

• if I keep typing on my computer I will eventually starve;
• if I keep lifting weights or endlessly running on that treadmill, I will collapse;
• if I keep eating this chocolate cake of mine, I will be sick.

So? Everyone who has ever engaged in those activities understand that there are ends to them, that we’re only doing them for a particular purpose for a certain period of time, and that extrapolating snapshots of reality is quite silly; I do not intend to continue this activity until the brink of whatever physical boundary there might – or might not – be. Until I approach some “safe” distance to that brink, I’ll happily indulge in my chocolate cake, lift my weights or type away at my keyboard. In economic speak we are trading off one resource for another, until saturation or the fulfillment of some other aim becomes more important (prime example is Environmental Kuznets Curves).

The other confusion is to believe that economic systems cannot change and that humans cannot adapt. It is emphatically irrelevant that there is a physically limited amount of oil in the ground, since price systems and their incentives effectively ration oil use according to urgently-induced needs and encourage substitutes when those are needed. More importantly, the price system for raw materials incorporate and incentivize technological improvements that 1) through discovering new deposits literally expands “the” amount of resources,  2) shape cost-effective processes to hard-to-access deposits we couldn’t profitably exploit before, 3) improve the bang for our buck, i.e. how much output we can squeeze out of a given quantity of material. Thus, there might ultimately be a physical limit, but not an economic limit.

Let me give an iconic example: chopping down trees quicker than the forest grows. Such an activity seem pretty ‘unsustainable’ since the declining size of the forest implies that one day there will no longer be a forest. So what? There might be urgent present reasons for doing that (say, for instance, no other source of heat/fuel for cooking or no other source of income) that are very likely to change in a fairly short time frame (ie, before complete deforestation has occurred); the current prices of pulp or firewood may be meaningfully higher than their anticipated future prices (‘selling’ off some capital assets would therefore be fairly prudent); there might be future technological innovations that a) (re-)grows forests quicker, b) offers a better substitute to the current use of wood, c) allows us to cheaply make use of more from what we chop down.

Almost any practice taken as a snap-shot in time is literally ‘unsustainable’. Naively believing that they will mindlessly continue linearly into the future is quite silly; hailing processes that don’t as righteous and ‘sustainable’ is similarly silly. Human societies and their economic process are dynamic systems capable of (read: constantly) change.

By saying that something is unsustainable, my generation wants to convey the idea that these activities are immoral and that they shouldn’t continue. It’s a naive and erroneously nonsensical conviction.