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Frame from Freeman Dyson on the Global Warming Hysteria April, 2015 Plays via YouTube's privacy-enhanced embed

Freeman Dyson on the Global Warming Hysteria April, 2015

1000frolly PhD
Interviews
YouTube
3 HN users recommended this interview3 months2018–2020 score 3
Years with an HN recommendation, 2007–2026

HN commenters point to it as a prominent physicist's skeptical counter-view, usually when someone asks for dissenting opinions.

A 2015 interview in which physicist Freeman Dyson, then 91, argues that global warming concerns are exaggerated, that CO2 is beneficial and that climate models oversimplify complex systems. It is posted on a channel that opposes climate consensus.

“He explains his position quite coherently” (HN, 2020)

3 recommendations · 3 citations · Interviews · partly dated

6 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@briantakita Feb 2020 Recommends
on HN thread Freeman Dyson Has Died
Freeman Dyson did speak out against climate alarmism. He provides some insightful counterpoints to the prevailing APW narrative, particularly about taking models on faith & the provisional nature of science. Given he was directly involved with some of the initial climate models, it's an interesting take on how models of complex nonlinear systems often oversimplify reality with assumptions. It seems like good general wisdom re: models in any domain exhibiting similar complexity & nonlinearity. [this video]
Dyson on climate models oversimplifying complex nonlinear systems.
@chrisco255 Apr 2020 Recommends
on HN thread Remembering Freeman Dyson
Read more
He was an expert as much as anyone. From his wiki: "Around 1979 Dyson worked with the Institute for Energy Analysis on climate studies. This group, under Alvin Weinberg's direction, pioneered multidisciplinary climate studies, including a strong biology group. Also during the 1970s, Dyson worked on climate studies conducted by the JASON defense advisory group.[26]" He held the view that CO2 was mostly beneficial to the biosphere and that anthropogenic warming was much milder than has been estimated. You can watch his interview on the subject of you're curious. He explains his position quite coherently: [this video]
Dyson coherently explains his view on anthropogenic warming.

Citations, criticism and jokes

@whydoyoucare Oct 2019 Cites it
on HN thread The Money Behind The Climate Denial Movement (2013)
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To me science is never settled, and anyone who claims climate crisis is pretty much definite has an incentive that has other hidden angles than we are led to believe. This is not a denial position, but is largely characterised so. Nothing in science is black-and-white, there are infinite shades of gray in between. Having said that, Freeman Dyson also seems to share this opinion, and I think it carries some weight: [this video] . Another article also says the same: [link] The later link also highlights an important aspect from IPCC's report: "In climate research and modelling, we should recognize that we are dealing with a coupled non-linear chaotic system, and therefore that the long-term prediction of future climate states is not possible. (Chapter 14, Section 14.2.2.2.)]" Whatever I know about modeling and Lorenz's theories, I do think long-term climate predication is impossible given our current models. Is that denial? Certainly not, and I am open to change my mind as models become more accurate and more data is avaiable. Till then I would not want my wallet to be lighter in the name of carbon taxes, please.
Dyson shares skepticism about settled climate science.
@briantakita Feb 2020 Cites it
on HN thread Freeman Dyson takes on the climate establishment (2009)
Here's an interview of Freeman Dyson in 2015 re: APW & faith in models of complex nonlinear systems. Also goes into solar activity (electric, magnetic, & ion ejections) as a driver of climate change. Note that CMIP6 includes particle forcing to its model. CMIP5 & earlier versions did not include particle forcing. [this video]
2015 Dyson interview on models and solar activity.
@chrisco255 Apr 2020 Cites it
on HN thread Noam Chomsky: A Green New Deal Can Create Jobs and Livelihoods
Read more
Number one they're not all in agreement. Number two, outright, science does not work on consensus. The only reason climate relies on consensus is because they cannot validate their models. They are stuck on the hypothesis step of the scientific method. It doesn't matter how many people you get to agree with your hypothesis. Without empirical experimentation, it proves nothing. You cannot beat chaos theory. The current crop of climate scientists are not being honest about the extremely exponentially high levels of uncertainty in their forecasts. You would do well to read from first principles on chaos theory and ask yourself whether I'm the crazy one for claiming that the future of our climate is unknowable. We understand weather far better than we understand climate. And we cannot predict it more than 10 days into the future. At any rate of you want to hear it from true experts here are a few: Richard Lindzen, PhD Atmospheric Sciences, MIT [link] Patrick Moore, UBC [link] Henrik Svensmark, Danish Space Institute [link] Freeman Dyson, Cornell [this video] NASA admitting they have no model for clouds: [link]
Listed as an expert skeptical of climate consensus.

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