How Slovak miners may have invented the wheel

Necessity may be the mother of invention, but the wheel is her most famous child. On its own the wheel is pretty useless, but the system of wheel and axle turned out a pre-historical technological revolution. But when, where, why, by whom and how often has the wheel been been invented?

After all, we can do fine without a wheel. Many, notably the Americans, never used wheels for transport. Early seafarers got around well without it too. But in Eurasia and North Africa the wheel spread early on. So early that it is hard to track its origin, design process and use-case.

There are two obvious precursors to the wheel, the sled and the roller. A sled is designed to minimise friction when dragged or pushed. A roller is a de-branched tree trunk rolling between the ground and the cargo. Rolling reduces friction even more, a process that ultimately gave us ball bearings.

This paper gives a convincing origin story for the wheel: Reconstructing the invention of the wheel using computational structural analysis and design

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Past the Peak: Climate Control

From peak emission to peak population to peak car, we are about to enter a series of turning points. What does this mean?

Global peaks

2012: Peak birth
2017: Peak ICE car sales
2020: Peak child
2024: Peak emissions, oil and coal
2038: Peak ICE vehicle fleet
2040: Peak meat?
2082: Peak population

Things change. But how do we know that? We can notice, sometimes measure, the effects of change, but it is hard to discern from variation, differences that happen when things haven’t changed.

To do so, we use indicators, measurements that are regularly taken and published pointing to outcomes of processes we may or may not know. They in turn have drivers we may or may not know. If we knew the wheels driving and impeding change, we may make simulations and scenarios to play out what would happen if they differed in strength or position. We can tell the future.

Mostly we don’t, and have to rely on indicators and other data to test our models and keep us honest. Indicators come in lagging, indicating change that has actually happened, and leading, change that may happen.


How is the climate changing?

The obvious indicator for climate change is how much CO₂ is in the atmosphere in parts per million (PPM). That has been fairly stable at 280 PPM until about a century ago when it rapidly increased, and is now around 423 PPM.

From CO₂ and other greenhouse gases (GHG) we get a global average temperature increase, but CO₂ concentration is particularly easy to measure. However this is a lagging indicator, showing what has happened to the atmosphere to date. Both increased emission of GHGs, primarily by burning fossil fuels, and also to some extent by reducing their absorption, like cutting down forests.

We are near a peak in CO₂ emissions. It could have happened already, if it hasn’t, it will happen soon.

However, that we are no longer emitting more GHG every year, and start to emit less, doesn’t mean that the CO₂ concentration falls. It accumulates in the atmosphere, effectively leaving us with a “carbon budget”.


People at the peak

By UN medium scenario we will reach global peak population in 2082. Europe reached it in 2020, for South America it will be 2048, Asia 2052, and North America 2082, Africa just after 2100. These are based on estimates for births, deaths, and for the continents migration. This is primarily a lagging indicator. We see that more clearly if we subdivide by age group instead of continent.

Age group 65+ will not peak this century at all. Age group 25-64 will peak in 2070, while children under 15 peaked in 2020.

And number of births is the leading indicator. That peaked in 2012 with 146 million. In 2023 births have fallen to 132 million. Peak population, the year when deaths exceed births, is projected to happen 70 years after peak birth, in 2082.


Peak ICEV

The internal combustion engine (ICE) is nearing its end. For passenger cars the sale of ICE-only has already peaked, while sale of electric vehicles (EV) are growing fast.

Look to Norway

Norway, due to longstanding pro-EV policies, has been ahead of the curve. Sale of petrol cars peaked in 2004, diesel in 2011. The majority of new cars have been BEV since 2020 (since 2017 if including hybrids).

Chart only goes to 2021. In 2024 the numbers were 89% BEV, 2% PHEV, 6% HEV, 1% petrol, 2% diesel. Source: Wikimedia

However, there is a significant lag from new car sales to the composition of the car fleet. In 2023 it comprised 63% fossil-only cars (37% diesel, 26% petrol), 13% hybrids, and 24% BEV. That in a year where only 1.4% of new cars were petrol, and 2.5% were diesel.

Norway reached peak ICE in 2015 for passenger cars. Car sales is very much a leading indicator.

Passenger car fleet in Norway. “Bensin” is petrol ICE, “Diesel” is diesel ICE, “Elektrisitet” is EVs (BEVs and hybrids). Source: Statistics Norway

And passenger cars are very much a leading indicator for other vehicles. While 37% of passenger cars are EVs, the corresponding numbers are 9% of busses, 6% of vans, 2% of lorries, and 0% of tractors and farm machines. As long as there are ICEVs in the transport sector, their emissions will accumulate.

Also, Norway may recently be reaching peak car, at about one car per two people, half that of the US, three times the estimated world average. Early to tell, but increased urbanisation with better alternatives to driving may have that result. The recent dip looks primarily economic though, like elsewhere in the world car sales are down.

“Kjøretøy” is vehicles, “personbiler” is passenger cars.

We can expect a similar lag from sales to vehicle fleet globally as in Norway. In 2021 the US Energy Information Administration expected that peak to come in 2038: EIA projects global conventional vehicle fleet will peak in 2038, however it is likely to happen sooner.


Peak coal

We now have more of a coal plateau than a coal peak, with two competing trends. Most of the world coal has either peaked or at least plateaued. In Asia coal is still rising.

The UK peaked in 1979, EU 1985, Russia 1987, US 2007, Japan 2008, South America 2014. We may have reached global peak coal by 2024, the IEA expects so, but that depends largely on China, which burns half the world’s coal. If it doesn’t happen this year, it will happen soon, but China also had a false peak in 2013. Currently the largest increase is with India, where growth in energy demand rises faster than growth in renewables.

The major emitters are large. Measured per head the Asian countries are more in line with other countries, but still on the high side. Globally, consumption has been pretty flat, it has gone up by ⅙ over six decades, as it has shifted from the West to Asia.

If a small number of countries decide to stop smoking like the West has, we would in effect have phased out coal.

However, while ⅔ of coal consumption goes to power and heat, the rest is used for industrial purposes, ⅙ just to steel production. Industry too can transition to low-emission, but industrial plants are slower to adapt.

Peak oil

Our fossil oil demand may have peaked already. However, it is not the year it is peaking that matters, but how rapid the fall will be after the peak. Stopping the rise is not enough. It must fall, and fall fast.

As shown above, the total number of cars haven’t peaked, nor their size, but the number of cars with ICE engine have. As


Peak meat

We have reached no global meat peak, but regionally we may have.

In 1990 the EU reached a peak of 87 kg meat per person per year, now it is 80 kg. The US may have reached their peak as well, at 127 kg, and China at 63 kg, but that remains to be seen.

For emissions, meat production is practically the only thing that really makes a difference, but food production can have other environmental consequences as well.

Peak meat, either by fewer people eating meat and/or people eating less meat, will have a large impact on (peak) emissions, but this could also happen by improving production techniques. As you can see there is a huge difference between types of meat, but also in how they are produced.


Peak fossil power


It’s all downhill from here

How do you know you have reached the peak? When there are no taller peaks around, something that can in principle only be realised in hindsight. But when disruptive change happens, those drivers that pushed up the numbers may no longer do so.

Better batteries led to EVs outcompeting ICEVs, and there will be no triumphant resurgence for the combustion engine. Nor will there be any comeback for fossil fuels either. When we stop burning stuff there is no motive to start again, not even nostalgia.

Not everything here is experiencing disruptive change. We are not at peak car for instance. Maybe we will soon, maybe we won’t. One obvious competitor to the car is the videoconference. If we work more from home, we will commute less, and commuting is the prime motive for driving a car. There are more, perhaps better, alternatives to a car. Maybe we will have fewer cars being used more. A private car is in motion only a few percent of the day. All that is possible, but is not happening yet.

The global population is collapsing, if by “collapse” we mean an unrelenting decline over many generations. Thus, we are at a peak, several peaks, but maybe getting many children will come back in fashion again. Possible, but like with all demographic change, it is slow and won’t happen any year soon.

Maybe meat will be back, and people will eat more meat, rather than less. Maybe novel meat, or meat not coming from dead animals. Not happening yet, either.

How far, how fast?

So we are now at a stage where our indicators are turning. Instead of becoming larger, they are getting smaller.

Let’s look closer at BP’s scenarios for oil demand. The blue lines are earlier demand estimates from earlier years, but the three current scenarios (“business as usual”, “rapid” and “net zero”) are dramatically different. They all show us peaking, but the “business as usual” scenario falls at a very slow rate, and “net zero” at a fast one. Roughly the latter will reach zero in 40 years, while an extrapolation of “business as usual” will take us to the 24th century before the fossil era has ended.

Being at the turning points gives us great opportunities and responsibility. Somebody living in the 2060s will have little impact, if any at all, on total GHG emissions, as they are already close to zero, and further mitigation already in motion. Likewise, there were less tools available back in the 1990s to reduce emissions, they were more costly, and their impact would be less (the research and product development at the time has on the other hand proven critically important).

The consequences of doing a little more, or a little less, are now at the highest. A smaller change now will be more effective than a larger change later. This is the time that we should speed up our effort to the best of our abilities.

The Edge of Europe

Europe is a somewhat contorted triangle at the Western extreme of Eurasia.

Like most other regions, Europe is habitually presented with north pointing up. Which is fine, that is a standard and standards help us take in geographical data without having to reorient ourselves. This the familiar, to us Europeans at least, standard representation™ of Europe (I’ve used Google Earth for all these projections).

However, going back to Europe being a triangle, more or less, to get different European perspectives we should go to the three sides of that triangle. Beginning with

Atlantic Europe

This is the dominant side, more people live to the west and they are overall richer. Viz the Blue Banana.

Also the Atlantic side is to a large extent Trans-Atlantic. What happens on the American continent, particularly North America, matters most.

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Mastodon/Vivaldi as a POSSE publishing platform

This earlier dialog

Toot-sized summary:
Mastodon: cool
Integration with Vivaldi users: cooler

But you can go further (given time, desire and business case): two-way bridge between Mastodon and all your other content

Even further: POSSE-style publishing platform on vivaldi.net

Even further: Social networking repository supported by the browser itself


Daniel Aleksandersen
@daniel

What do you mean by “social networking repository”? An archive of your timeline Mastodon timeline?

Quite literally a private copy of all your included social network activities (Mastodon as a starting point).

This was not practically possible before because social networks were unstructured web sites, owned by companies that wanted to exclude outside services built on top of them. But when (more or less) built on open standards, a browser would know what it is dealing with.

So yes, ultimately Vivaldi as a Mastodon+ client, directly and/or via extension.

Thus POSSE (“Publish Own Site, Syndicate Elsewhere“) concept, only taken further in a few directions.

1. Vivaldi.net can be an “Own Site” as a starting point. Publish there, replicate elsewhere (according to user-set rules, with reasonable easy defaults and UI). The (re)publishing is kept track of.

This will include unpublished entries (“entry” here refers to tweets and toots and posts and blogs and whatever else it around), what I call repository.

A scenario a local active collection and 1+ cloud-stored BLOBs for safety.

2. This can at later be moved back to the browser, either as a structured collection, like on Vivaldi.net or as an encrypted BLOB. The later mostly for privacy. Since Vivaldi doesn’t need to know if just used as a backup, can switch between the two.

3. Open protocol syncs browser/vivaldi.net. Now the user doesn’t depend on vivaldi.net and can “POSSE” somewhere else if wanted.

4. As mentioned “entries” need not be restricted to toots, I can come back to that.

But for now I have only talked about Vivaldi as a publishing platform, the read-write-web. This matters, but most do a whole lot more reading and connecting than they do creating.

This would be a point to take stock. You are already doing publishing on Vivaldi.net. So up until now, it would be doing the same things slightly differently.

The way we mostly use social networks is to consume and to connect. A user agent could improve on both. Followers and following are types of contacts, connections.

Likes, favourites, and reactions are forms of metadata, or bookmarks. Should you e.g. be able to search for entries that have made you angry? (search is constricted in Mastodon for social reasons, but searching your past is different).

5. However, what I went on about is a different tack. I am not merely interested in what I have written on social media, but the context in which it was written.

When I reply to someone, or if a non-spammer replies to me, I am interested in those entries, that should be in the repository as well. Not my entries so deletable read-only.

Cache concept matches well, this is part of my social cache. With URLs to live, versioned or archived versions.

Have you looked at Secure Scuttlebutt? https://scuttlebutt.nz/ It’s another alternative to Mastodon and Twitter. (It’s not interoperable with either, though.) Every user hosts their own repositories of what they’ve said as well as the people they follow. Users exchange repositories through “pub” servers. It might be something to try if you want to explore these ideas. Although, persistency might not be what you want from a social network.

https://www.ctrl.blog/entry/append-only-so

This is what you get with a self-hosted Mastodon instance. You get your own copy of everything you share and everything anyone has ever shared with you. I’m not sure there’s a lot of value in duplicating that as a client-application. But, there might be a feature in an existing Mastodon client for all I know.

That’s the perspective of a site owner. For Vivaldi it isn’t much difference between client-side, web site, or cloud-like, if that is an available option.

But if you don’t trust twitter.com, facebook.com, or your Mastodon instance, would you trust Vivaldi.net to stay viable long term?

If you have a repository with at least one mirror, you are no longer dependent on your chosen Social Network Provider (hereafter SNP) to maintain your stuff responsibly.

(Also note it wouldn’t be a Mastodon site, but multiple SN accounts hosted by multiple SNPs.

Unless you are a media organisation, you probably won’t have dozens of accounts to maintain, but you probably will have at least a couple, and easily a handful. Type Twitter, Instagram and Pinterest to take three closed ones. Some would be Snapchat-ish fire&forget, others you’d hold on to for years or decades.)

Peace of mind, and ability to change SNP as easily as changing phone provider is nice, though hardly a killer app. But it is a good base to add new services on top.

(It might become a killer app in a manner of speaking. Competition is important. Lock-in to be avoided. If this can be shown to work, SNPs might be required by EU or equivalent to provide such an out )

A Game of Discrimination

The trigger

It began with a question in a tweet:

That is “How can people be blind to a systemic behaviour they participate in?” The question has a specific context (US white evangelicals), but I liked the question on its own, context-free.

If something is systemic, it may not be evident to any particular participant. In a psychological sense certainly (repression, cognitive dissonance and all that), but it could literally not be evident. You could discriminate or be discriminated against without knowing, or conversely you could think you are without it being the case. When something is embedded in a system, it can be hard to tell unless you know the system.

That led to another thought: What about a simulation where nodes discriminate based on pre-set properties, A Game of Discrimination?

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Retelling the future, chapter 1: The end of the PC

Introduction

Coming back to Vivaldi.net has led to me reconnecting to this Vivaldi blog, originally on My.Opera,com beginning 18 years ago. Two months after Facebook, a website that has turned out rather more successful so far. Like every web publication of age, it has the signs of aging like link rot and moving resources.

This series will dredge out past futures from that stream. Let’s begin with the personal computer:

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Slow and Federated Media

I have long been a fan of slow news.

This is a fairly consistent rule: The lower the update frequency, the higher the information quality. You get to know what is about to happen, why, and who is involved.

The higher the frequency, the more flicker. This just happen. And now this just happened. And another thing. Unending, and devoid of context.

This traps you in a moving vehicle where all you can see is through the rear window.

Slow talking

What applies to news, also largely applies to social media. Of course often we do want and need immediacy. Brainstorming might not work as well if you had to wait a day for each participant to respond (or wouldn’t it?).

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Breaking the garden walls

Europe has a social media #infosec issue. Most social media are American, some Chinese, a few Russian. No European. They were taken over by Facebook on its rise. Primary issue is their near monopoly power, but this event highlights that ownership is a risk as well.

Concentrated media ownership is nothing new. English language mass media has been dominated by the Murdoch family for decades. Media mogul Berlusconi is back in government in Italy. The US had Hearst. Would seem media are natural monopolies that can be owned and taken. But are they really?

To be clear, the solution wouldn’t be EuroBook (or for that matter Afritter or AsiaTube). Nor as such initiatives like #Mastodon.

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