Viewing profile — Maarten88

You are thinking about a slow boat in displacement mode, or a wave-surf board with very small fins. But I can tell you that the wetted surface area of my wing-foil board is exactly…

> Surfboards will have a Reynolds number of 10^7 which is entirely turbulent. A fin, foil or daggerboard below the board/boat is operating well within the range of Reynolds' number…

Any competitive sailor or foil-racer knows that the underwater surface has the least friction and best laminar flow when sanded with fine-grid sandpaper, around 1000 to 1500 grid. …

> I don't know which side is more likely right in this scenario. What are the motives? Follow the money? Who profits most might give an indication of who is more likely wrong.

You know the carbon footprint concept was literally created by BP marketing, to place the blame for climate change on society, and distract from all the evil stuff they did to prom…

> people who believe that crashing the US, including the dollar, enables them to build a US like they want Yes, it's strange how dumb some rich/succesful people are. As I understan…

Titanium's advantage is imo not so much its weight, as aluminium is better still in that respect. Titanium is mostly better where corrosion and temperature resistance are important…

> why nobody was doing this in 01890, 135 years ago Maybe because at that time tropical hardwood was readily available at low cost?

I'm pretty sure healthcare costs in the US are also higher as a percentage of GDP compared to EU, so higher wages would not explain the difference. Also productivity should be high…

> much more expensive and for no good reason There is a good reason: profits and management pay. And greed is good, right? > the problems are fixable Fixable in theory. The US woul…

The investigating is great, the problem is who is doing it and for what reason. If the misdeed is done by a non-public or poor company there is no money to be made so they would ne…

It's very worrying that consumer protection against poisoning in the US comes from a for-profit company that makes money by short selling companies they found to have issues and th…

With all the anger over illegal immigrants taking US jobs, as a European it surprises me that nobody in the US seems to even mention the idea of punishing the employer for employin…

Disruption at work. Ford can't make money on selling EV's, their overall margin suffers with every EV they sell. They have large existing investments in factories, processes and pe…

> the bus is a strictly worse version of the car in these kinds of cities You can change that by giving them their own lane so they don't get stuck in traffic with the cars, let th…

It's hard to educate the next generation when everyone of all ages is exposed to relentless propaganda (also known as marketing, in all forms including the fully legalized corrupti…

> I’ve read articles where even on a per capita basis just about everything is more costly in dense cities, from sewers to schools. Link? This NotJustBikes video suggests it is the…

> Tax haul for 10 houses are better than a 10 unit complex. I thought is is pretty well established that in US cities, poorer and denser neighborhoods are subsidizing the richer su…

I'm generally okay with Ads, that is fair. But I'm not okay with tracking, consolidating data about me from different sources, analyzing it and selling that. It is too hard to unde…

> Does this rule exist in any other sports? In sailing, boats are required to render help to a boat that is in problems, before continuing their race. Boats that render help are co…

Those RC dynamic soaring gliders pull up to 80G, which might also be an indication that this is probably not a good fit with manned flight.

Since when is it a crime to harm childrens health for money? Coca Cola has been doing it for 50 years, nobody seems to have a problem with that.

It's annoying how the article shows that independent activity/movement of children has declined drastically in the US and UK over the past 30 years while suicides have risen and ho…

A close relative was recently diagnosed with cancer and is undergoing chemotherapy. I tried to read up on cancer research and therapies and stumbled on several youtubers interviewi…

> ... new cities to be designed differently in several ways. One of which is for roads to be only for small autonomous vehicles and entirely separate ... As I understand it, this v…