A few years ago, I asked Freeman Dyson what we should teach our children so there would be more Freeman Dyson's. He gave a surprising answer. He said we should teach children to genetically "play" with plants. He thought we needed that kind of creativity as a human species if we would ever be able to populate the asteroid belt. He said that most of the surface area of the solar system is in the asteroid belt -- but t…
Freeman Dyson Has Died
101–110 of 267 posts
Re: Freeman Dyson Has Died
#102Earlier quoted context omitted.
Another plausible view is that it never sneaks in. Nondeterminism would only lead to free will if the mind somehow controlled the nondeterministic outcomes. We know the brain can't do that, so it's clearly a metaphysical question if you want to go further (the mind would have to be an agent distinct from the brain.) The answer to a metaphysical question is not always "no," but you will never be able to prove it.
sure... but that means the three options are: "free will exists in atomic physics" "free will doesn't exist" "free will exists but cannot be studied". I find only one of these to be an acceptable answer.
Re: Freeman Dyson Has Died
#103Earlier quoted context omitted.
>> Excess carbon in the air is good for plants, and global warming might forestall another ice age. How is it not "rooted in science" that excess carbon is good for plants? We're already seeing significant global greening, and yields are up. Excess CO2 also reduces the amount of water the plants need.
He's gone, so this isn't really the place for this discussion at all. However, I'm glad this is mentioned and how it shows that there are a lot of intelligent people who have concerns with the current science debate. Consensus isn't science, it's politics, and challenging ones ideas is how we both reinforce the truth as well as dispel myths.
Re: Freeman Dyson Has Died
#104Earlier quoted context omitted.
Or to look at it from a different angle, their fall is caused by their old age decline which in turn triggers their terminal decline. I've seen it throughout my family, once confined to bed at old age one's decline accelerates quickly. It's perhaps that the lack of movement that has some spiraling effect on their health. More and more people should not stop doing sports when they get older, they should do sports less…
I wonder how much of this depends on how big a change there is in movement? Would a lifelong couch potato for whom their post fall movement is only a few percent less than what it was before the fall be less affected than someone who had been very active before their fall and had to cut their movement by 95%?
Re: Freeman Dyson Has Died
#105Earlier quoted context omitted.
I am not sure how long it'd take to become socially acceptable, but I would bet we could make robotic tails for the elderly to help with balancing... accelerometer, motors and a few counterweights, controller and battery.
A lot of people have psychological hurdles to even using a cane. Something like "I raised N children, I powered through my career, I have been a strong independent human being as far as I can remember, why should I use a cane?"
To beat young whippersnappers!
Re: Freeman Dyson Has Died
#106Earlier quoted context omitted.
> seas taking over the cities are all demonstrable effects of climate change The sea level raise has been approximately 3 inches from the 1993 level. That is much less than the change due to the tides.
and the city of Ur use to be right on the coast, but now it's way inland. The Ganges River use to lead right up to Red Fort and now it doesn't. The location of certain geological features or bodies of water is a really poor indicator of environmental damage, because these things have changed constantly throughout time. However the tons of plastic we dump into the oceans, the lakes of sludge outside of Chinese factory…
It’s important environmentalists consider the whole and do cost benefit analyses of intervention.
I see much less of a cost to quality of life in reducing planned obsolescence and increasing the reusability of things than I do in decreasing carbon emissions wholesale. The transportation benefits of gasoline are enormous, and it makes less sense to restrict something so practical and beneficial than it does to try to reduce something as wasteful and pointless as intentionally making a product difficult to repair and maintain long term.
I’m very sympathetic to Dyson’s criticism of the status quo, although I don’t know enough to have an opinion on whether carbon emissions may be beneficial on net. He advocated for practicality rather than dogmatic belief, and was interested in simple interventions like changing land management and tilling practices if carbon emissions are actually as detrimental as are being touted, rather than dramatic energy reduction or conversion to expensive and currently less viable energy sources.
Regardless of whether or not people believe CO2 is on net beneficial for the planet, I think he was right in calling out the difficulty in having an apolitical, non-interested and practically minded perspective on climate change and environmental impact that goes against dogma. The science should speak for itself, and any candid and open good faith discussion to determine whether alternative perspectives are valid should be welcomed. Dyson’s argument that carbon emissions are probably good on net might be wrong, but his position was in good faith and well constructed. Any such position should be transparently engaged with rather than dismissed as uneducated.
Re: Freeman Dyson Has Died
#107Earlier quoted context omitted.
I don't know where I first heard that view, but I've long thought it was the only one that was plausible - where else could free will come from? is it supposed to sneak into physics somehow at a higher level?
Another plausible view is that it never sneaks in. Nondeterminism would only lead to free will if the mind somehow controlled the nondeterministic outcomes. We know the brain can't do that, so it's clearly a metaphysical question if you want to go further (the mind would have to be an agent distinct from the brain.) The answer to a metaphysical question is not always "no," but you will never be able to prove it.
Re: Freeman Dyson Has Died
#108Started writing "later” in life: “Life begins at 55, the age at which I published my first book,” he wrote in “From Eros to Gaia,” Never got his PhD. Taught physics at Cornell. Thoughts on climate change: "Relishing the role of iconoclast, he confounded the scientific establishment by dismissing the consensus about the perils of man-made climate change as “tribal group-thinking.” He doubted the veracity of the climat…
>> Excess carbon in the air is good for plants, and global warming might forestall another ice age. How is it not "rooted in science" that excess carbon is good for plants? We're already seeing significant global greening, and yields are up. Excess CO2 also reduces the amount of water the plants need.
The statement is completely true, but it misses the point as to why people are concerned and glosses over a lot of negatives.
Re: Freeman Dyson Has Died
#109Why does Freeman Dyson earn a black bar, and Katherine Johnson not?