Some Further Comments on Climate Sensitivity and Warming Estimates
While preparing an update of Carbon-Neutrality by 2050 (by far the most accessed page in this blog), I had another look at (equilibrium) climate sensitivity (ECS), a topic about which a wrote a few times before. ECS is the expected global temperature anomaly (i.e., the expected global average of warming) at twice the pre-industrial level of greenhouse gases (mainly CO₂) in the atmosphere (i.e., 560ppm, as “pre-industrial” is set at 280ppm). The currently most widely accepted estimate of ECS is that by Steve Sherwood and colleagues, who suggest average warming of 3.1°C (median; 66% uncertainty range: 2.6~3.9°C; 95%: 2.3~4.7°C). However,...
Pop-Stoicism as Ideology
Stoicism was a school of Hellenistic philosophy founded by Zeno of Citium around 300 BC. Stoic philosophy consisted of logic, (meta-) physics, and ethics. There has been a bit of an upsurge of interest in stoicism recently among widely different segments of society, ranging from right-wing extremists and male supremacists to Secular Buddhists and self-help gurus. Typically, this resurgent “stoicism” ignores most of Stoic philosophy and focuses on a simplified version of selected ethical doctrines. (And that selection, moreover, depends on the interests of the group that does the selecting.) The most prominent doctrine of this “pop-stoicism” is the idea...
What is Real? (New Paper)
Published yesterday in Organon F: International Journal of Analytic Philosophy (30.2: 182−220). abstract: Two of the most fundamental distinctions in metaphysics are (1) that between reality (or things in themselves) and appearances, the R/A distinction, and (2) that between entities that are fundamental (or real, etcetera) and entities that are ontologically or existentially dependent, the F/D distinction. While these appear to be two very different distinctions, in Buddhist metaphysics they are combined, raising questions about how they are related. In this paper I argue that plausible versions of the R/A distinction are essentially a special kind of F/D distinction, and...
Is Secular Buddhism Possible?
The question whether secular Buddhism is possible might seem absurd at first. Varieties of what has been, or could be called “secular Buddhism” have been around for well over a century, and there is a sizable group of people who consider themselves “secular Buddhists”. So, of course, “secular Buddhism” is possible. So, let’s be a bit more precise. My question is not really whether there are “things” (in a rather broad sense of “thing”) that could be or have been called “secular Buddhism”, but whether there could be something that is genuinely secular and simultaneously genuinely (a variety of) Buddhism....
Rent, Profit, and Degrowth – A Postscript to “Capitalism and Climate Collapse”
In Capitalism and Climate Collapse, I argued that catastrophic climate collapse cannot be avoided under capitalism because capitalism requires economic growth, economic growth requires energy growth, energy growth requires extensive burning of fossil fuels, and extensive burning of fossil fuels causes catastrophic climate collapse. To avoid collapse, we need to shrink the economy – that is, degrowth – to a sustainable level with respect to energy requirements, and then switch to a steady state economy to stay at that level. What exactly that sustainable level is is debatable, but regardless of whether it’s closer to one third of current closer...
Capitalism and Climate Collapse
The claims that capitalism is the cause of climate change and that catastrophic climate collapse cannot be avoided under capitalism are as obvious to some people as they are nonsensical to others, but really they are neither. They are probably true, which implies that they are not nonsensical, but their (probable) truth is not obvious. They are not obvious, because these claims depend on four other claims that are themselves non-obvious: (1) capitalism requires economic growth; (2) economic growth requires energy growth; (3) energy growth requires extensive use of fossil fuels; and (4) extensive use of fossil fuels causes climate...
Some Remarks on the Notion of “Cartesian Dualism” in Continental Philosophy
In the beginning of the 20th century, Western philosophy split into two main schools, analytic and continental philosophy, that – barring exceptions – neither read nor understand each other. My own work and influences are mostly within, or closely affiliated with, the analytic school, but occasionally I read some continental philosophy (as well as some non-Western philosophy). One peculiar term I encountered several times in such reading across scholastic boundaries is “Cartesian dualism”, most recently in Saito Kohei’s Marx in the Anthropocene. To be more precise, it is not the term itself that struck me as peculiar – you’ll find...
On Human Overpopulation
A recurring theme among a number of widely divergent political and environmental movements is that of human overpopulation. Often, the claim that there are too many humans has conspicuous racist overtones and is associated with ecofascism, but claims of overpopulation are also made by people with very different political ideas. Much of the popular overpopulation discourse appears to be quite ignorant about what “overpopulation” even means, however, and about what it might imply, so I thought it might be useful to write a few words about this. What even is “overpopulation”? “Overpopulation” is a relative term – it means that...
SotA-R-10: Combined Models 4 and 5 Suggest 62% Change of Exceeding 3°C of Average Global Warming
(This is part 9 of the “Stages of the Anthropocene, Revisited” Series (SotA-R).) The previous episode in this series explained a few problems of the last iteration of the model used to better understand feedbacks between climate change and socio-political and economic circumstances (i.e. “Model 4”). Additionally, in another recent post, I mentioned that the relation between atmospheric carbon and warming is probably better treated as linear, with time lag explaining the discrepancy between a linear equation and the current level of warming. Furthermore, that post also addressed the issue of tipping points (and other neglected feedbacks), leading to an...
The Probability of the End of Civilization in the 21st Century
Climate scientists have been calling recently for more research into warming scenarios of 3°C and above because such scenarios are dangerously neglected. According to mainstream models such levels of warming are by no means impossible or even unlikely, and would have catastrophic effects. Luke Kemp and ten colleagues write: Could anthropogenic climate change result in worldwide societal collapse or even eventual human extinction? At present, this is a dangerously underexplored topic. Yet there are ample reasons to suspect that climate change could result in a global catastrophe. The answer to the question in this quote is obviously “yes”, but that’s...
Tipping Points, Permafrost Thaw, and “Fast” Reduction
Last Thursday a new analysis of the main “tipping elements” in the Earth system was published in Science., The paper and its supplementary materials provide data on likely thresholds and effects of all the main tipping elements that have been discussed in the literature of the past two decades. Furthermore, the supplementary materials also discuss a number of other feedback effects that have been suggested as tipping elements before, but that turn out to be too gradual to be properly classified as such. These effects are at least as important, however, and tend not to be (fully) included in common...
Making Sense of “the Meaning of Life”
Most of this article was written in 2017. I never finished it, but rather abandoned the project halfway §12 for reasons explained below. Until the horizontal line separating old from new, the following is the unchanged text of the 2017 draft. §1. There is a common idea that philosophy is concerned with figuring out the meaning of life. Although there are exceptions, such as James Tartaglia, most academic philosophers will deny this. But when I ask my students during the first day of class of my “Introduction to Philosophy” course what philosophy is about, then “the meaning of life” is...