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Comment Re:Humans are doomed (Score 1) 128

Global population will begin to decline in 2080.

However, the population of people 40 and under *has already peaked* and is declining. That means *not enough people working* to pay for benefit programs for people over 60 starts *today* .

So you are not having kids-- big whoop. Basically you are saying, "after me the deluge"

Population growth is occurring because of improved medical care and longer lifespans. But having 5 billion seniors, 2 billion adults, and 1 billion kids isn't going to be healthy.

I'm going to move on now. I can tell you are a flat-earther type. Further discussion with you is pointless.

Comment Important, but uses slowness of Turing Machines (Score 3, Interesting) 37

YouTube lecture on this by the discoverer, Ryan Williams
Ryan Willaims's paper, "Simulating Time With Square-Root Space
This appears to be based partly but largely on Tree Evaluation is in Space O(log n * log log n)" by James Cook and Ian Mertz (2023 colloqium, STOC 2024 conference).

I'm just a programmer who has spent an hour or so looking at this, so please take the rest of this post with a grain of salt.

I get the impression that Professor Williams's result so far, already a tool for making progress about which computational complexity classes are the same and different, has the limitation of relying on how slow Turing machines are at accessing memory, based on the mention at 18min:50sec into that YouTube Video of how the space savings degrades for a Turing machine with tapes of more than one dimension. If I understand correctly, for such Turing machines, an algorithm with running time bounded above by time T(n) for any input of length n, the space used by this potentially much slower space-saving simulation is bounded by O( ( T(n) + log T(n) ) ** ( 1 - (1/(D+1))) ). I'm using "**" as exponentiation, so the exponent means square root (that is, exponent 0.5) for a one dimensional (linear) tape, two thirds power (exponent 0.66...) for a tape that is a two dimensional surface, 0.75th power for a three dimensional tape, and, so far, no known savings for a tree shaped tape, although I suppose that that three dimensional limit does ultimately apply to real world data storage systems.

Comment Re:It's too late baby... (Score 1) 128

Until you accept the reality that it's too late to fix/solve the problem, you are not dealing with reality. Once you are dealing with reality, you can start making rational decisions about what actions you can take to improve your personal situation and to keep from making things even worse than they already are.

Comment Re:Humans are doomed (Score 1) 128

It will cause your children discomfort if they are under 50.

Higher insurance costs.
Higher food prices.
Possible loss of some food selection (really... that's already happened since I was a child but it's more driven by corporate excessive profit seeking where they will give 12 feet of shelf space to their most profitable product and simply shut out profitable but less profitable products that used to share about 6 feet of shelf space out of that 12).
Increased likelihood of suffering a tropical disease or parasite (nasty one up from central america got a 65 year old friend of mine 4 years ago from a mosquito bite).

But our kids face other challenges, like reduced job opportunities due to AI, the declining marriage rate, the declining population rate (which is probably bad for you and me but good for them).

Comment Re:It's too late baby... (Score 2) 128

Yea.. really it is. It's been too late for quite a while now.

I'm not saying don't do your best to address it. But we were supposed to be down to adding 29 gigatons of carbon annually by now and instead we are up to adding 45 gigatons of carbon annually next year.

And since every 1,000 gigatons roughly equates to +1C, we are now putting enough carbon out to raise the temperature every 22 years.

And those projections are ignoring the *massive* methane sublimation that's already been underway a few years.

So, every projection you've read about the future is tremendously over optimistic.

And let's not get into the way the rain bands have already drifted towards the poles about 50 to 80 miles and it's implication for our current breadbowls.

Nor the way tropical diseases and parasites have been drifting pole wards.

Even cutting carbon output will "temporarily" (i.e. for several decades) increase temperatures further.

Comment Re:Mass Migration (Score 1) 128

FYI:
According to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report and other scientific sources, here are general estimates of likely average sea level rise per decade from 2020 to 2100:

Sea Level Rise Projections (2020-2100)
2020-2030: Approximately 3-4 mm/year, resulting in a total rise of about 30-40 mm (3-4 cm)
2030-2040: Approximately 3-5 mm/year, leading to about 30-50 mm (3-5 cm) over the decade
2040-2050: Approximately 4-7 mm/year, accumulating around 40-70 mm (4-7 cm)
2050-2060: Approximately 5-10 mm/year, leading to about 50-100 mm (5-10 cm)
2060-2070: Approximately 6-12 mm/year, resulting in about 60-120 mm (6-12 cm)
2070-2080: Approximately 7-15 mm/year, totaling about 70-150 mm (7-15 cm)

And NASA's actual measurements of a "Global average sea level rose by about 0.3 inches (0.76 centimeters) from 2022 to 2023" back up the IPCC projections for the current time frame (a rate of about 3.81cm vs a projection of 3-4cm).

When the north saharan wind and sand and various other confounding and boosting factors line up, there will be more category 5 hurricanes ( and more than spin up from tropical storm to cat 5 faster than they did historically-- so no warning).

And the insurance company's know this. They have doubled, tripled, and *even refused to write policies at any rate* for not just "beach front property" but *any* property within 100 miles of the coast (and near many internal continental river basins as well due to increased flood and extreme flood risk).

This makes me recall the fact that most religious dog breeders believe in genetics and evolution. Because they have to deal with the reality of genetic on a daily basis in their business.

Comment Re:Humans are doomed (Score 1) 128

But we know climate change deniers will ignore any studies and data presented.

Heck, there's an entire channel devoted to debunking climate change denial and people (often) just ignore what he says and post blatant misinformation (and to the point: Often based on religious beliefs).

potholer54: A retired geologist.
Here's a good starting video
https://www.youtube.com/watch?...

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