Sewing himself makes about EUR 9 million per year from his primary job. Assuming he works 16h days for 6 days a week, his hourly wage is about EUR 1800. I'm pretty sure a lot of people would be willing to put in a few more hours at that rate...

But on the other hand: Do we really need to "grow the economy"? There are many things that would improve the quality of live without more little pieces of paper moving from people to people.

That may go both ways - I have bought my bike with ease of maintenance in mind. Rohloff Speedhub (no fiddling with the derailleur, no super-skinny chains that need frequent replacement), hydraulic disk brakes (no adjusting of cables, brake pads live a long time), Schwalbe Plus tires (basically no flats, pumping maybe twice a year - and I have a good floor pump). It goes to the shop once a year. I used to do all maintenance myself, but I have reached a state where I have more money than time ;-).

Indeed. The reason for the fast depreciation is not that the cars go bad, but that newer generations are better and cheaper. The solution is, of course, to keep driving your still good enough car for longer....

Funny, that is exactly the reason I sold my last car 25 years ago. It always needed something - fuel, wiper fluid, oil change, tire change, bi-annual inspections, repairs, insurance payments, registration, free parking spots, ....

I now use cycling for most trips, sometimes combined with public transport. I use taxis for the few occasions where driving is that much more convenient, or I get a rental car. I'm actually in a car sharing organisation, but I last got a car from them more than 5 years ago.

Note that cycling doubles as a cardio workout, so unless you don't do sports, it's basically free time.

Indeed not. It's not the subject of this study. And it does not need to be, because humans as the overwhelming cause of current climate change is the established state of the science, backed by thousands of papers. Similarly, a medical study of the cause of broken bones will mention falls, but not show that they are the result of gravity.

When it was last "much warmer", it was at least a couple of million years ago. These are timescales over which biological evolution happens. Snow crabs either moved their habitats, or they adapted, or both. "This study" says nothing about their pre-historic populations. It looks at the cause of the current short-term reduction in the number and habitat of the crabs. Note that they are still living - just in much reduced numbers (but still 1.9 billion in the Bering sea in 2022). And they have reservoirs outside the Bering sea.

Bold claim, but wrong claim. There are multiple publications showing natural furin cleavage sites in different viruses, including other corona-viruses related to SARS-COV2. See e.g. SARS-CoV-2 furin cleavage site was not engineered in PNAS (September 2022) and The Emergence and Evolution of SARS-CoV-2 in Annual Review of Virology (April 2024).

What a surprise - if you don't count the hard part (getting clear requirements) as part of the project, then your project is less likely to fail. But how many projects with BFUD did not even make it to the "clear requirements documented" phase?

To quote from the article: "In comparison, the cost of each megawatt-hour of electricity from wind and solar photovoltaic plants is around AUD$100 [as opposed to AUD$400-600 for SMRs], even after accounting for the cost involved in balancing the variability of output from solar and wind plants." (emphasis added by me).

If you had read the article, you might have noticed the link to the source for the costs, the GenCost consultation report. Quoting from the associated FAQ: "Levelised costs combine capital costs with running costs such as operating, maintenance and fuel, in units that enable us to compare technologies side by side." In particular, they do not just compare construction costs, but take all costs associated with building, running and maintaining the power plants into account.

Climate models model the climate and its reaction to external forcings. CO2 emissions are a human input into the climate system, not an inherent property of it. To create forecasts, we use representative concentration pathways, but these are not outcomes of the models, but inputs to it. They cover a wide range, but I suspect we are close to RCP7 or RCP8.5.

Of course, the natural intelligence in me suggests to just build those AI data centres up in Scotland. Or even in Iceland, which has a surplus of renewable, carbon-neutral electricity...

We are not talking about CO2 emissions (which are well-mixed in the atmosphere, and where human emissions dominate volcanic emissions by about a factor of 100). We are talking about sulfur-based aerosols. Just like CO2, these are emitted by humans and by volcanoes. But unlike CO2, they are not well-mixed in the atmosphere, and human (in particular shipping) emissions are emitted into the low atmosphere, have a short atmospheric life time, and mostly have relatively local effects. Some volcanic emissions, on the other hand, are strong enough to reach beyond the tropopause, and do indeed have global effects. I thought it useful to make it clear that while some sulfur aerosols do reach global distribution, that is not true for all sulfur emissions. In particular, the effect of reducing the amount of sulfur emissions by ships has only local and limited effects. It can explain a small part of the current warming, but not nearly all of it.

Science does not do proof, only disproof. And of course dark matter makes observable predictions - e.g. that there are cases where gravity and visible matter are decoupled. As I mentioned above, the famous case is the Bullet Cluster, where two galaxies collided and passed through each other, leaving most of the matter (the interstellar gas) in the middle, but most of the gravitational matter stayed with the stars.

Even the largest modern ships have a height in the tens of meters - for a variety of reasons, from stability to harbour infrastructure. Yes, they are "massive", but that is relative. Massive relative to a truck, or a human, or a single family home. But many volcanoes are measured in the thousands of meters, and their ejecta often reach the stratosphere. These do indeed spread over much of a hemisphere, in particular (pun alert) because they get above the normal weather layers.