want2know

Well maybe this is different in the US but in Europe electric cars are easily 20% heavier than similar models.

The traction idea is not absurd. Tesla owners claim the tires last around 25000 kilometers instead of 60000 when the drive 'insane' all the time.

Takeshi Uchiyamanda was always talking about the environment when he talked about hydrogen. And even now he sees that battey cars are taking off he still stand by his point.

But that is all marketing talk?

There are other problems arising for electric cars: road tax.

Electric cars are way havier than most cars and have so much traction that road maintenance will be much more expensive when everybody has an electric car.

This is why countries like Norway and the Netherlands are thinking about raising the road tax for electric vehicles.

I also think this is why brands like Toyota are still thinking about hydrogen cars. They still don't believe 100% in electric battery cars.

And it is estimated world population will grow to 11 billion max.

Your comment is absolutely unhelpful.

What is your point? Should we kill everybody over 70 years old?

Because: there is no overpopulation, and if there was it is not caused by too many babies but by people living longer.

When it comes to CO2 by agriculture: we are eating way too much (meat).

The same is true for digital audio.

We are so used to see the visual presentation of samples that look like a bar diagram, that a lot of people think analog sounds better because the curves are smoother.

Chris Montgomery has a great talk about this.

I have a comment in this thread about stress that might help you.

About anxiety: talk to a psychologist and keep doing things you like.

Your stress is the result of responsibilities or the feeling of responsibilities you can't control.

First step is to figure pout what you feel you are responsible for but are not. You can quit that part immediately because that responsibility only exists in your head.

Then there are responsibilities you have, but can't control.

Then there are multiple options. For example:

Stop having that responsibility. For example tell that you can't take it anymore (not always possible).

Ask for help so you can fullfil the responsibility with someone (not always possible).

Take responsibility. Change your life if your way of living is holding you back from taking responsibility (not always possible).

It helped me a lot to think about it because there are a lot of responsibilities in your head that don't exist. A demanding company with an unrealistic and unreasonable planning is not your responsibility. Your well being is.

Some time ago I had a long period of intense stress. It is amazing how much it changes your mind and body.

Muscles contract causing all kinds of insuline problems, your hormones become a mess, and all this is raising stress levels more because you don't know what is going on in your body.

And then an anxiety disorder is right around the corner.

And when everything is ok again your brain produces stress hormones when you hear a sound that would trigger you earlier or just a smell or a color.

I think this is the most difficult part to get back to normal:

The brain brings you in stress mode for no obvious reason. Then you have to reason about it so the stress goes away and you will slowly reset your brain.

But I doubt the paths in the brain will ever go away. It will be like a overgrown path in the end but it is still there.

What is now also known, and not very clear from the article, is that sipping water throughout the day is not very good.

As the article is pointing out, a lot is happening when you drink water. And sipping all day means the body never gets rest from the 'water intake mode'.

So it is best to drink water until you have enough when you feel thirsty.

Edit: this was studied by Thomas D'havé, Leo Pruimboom, Tim Noakes, and others

It is most likely made of welded titanium particles as others point out.

Imagine a thin layer of titanium dust. Then shine a laser on the points where you want to weld. When done, add another layer over it and repeat.

Or imagine a nozzle which sprays titanium dust. Directly after the nozzle there is a focused laser point. When the dust goes through the laser it welds together. So when you do this close to a titanium surface you can add more titanium to it.

And there are other methods for 3D printing metal. But most of them are just advanced welding techniques.

Dell computers are very easy to open. Desktops even don't need screws. Laptops might have some screws but that's about it.

That is also how they keep repair costs low.

I always think they are better designed than Apple computers and today they even look nice.

With Dell I got the same experience. My power supply stopped working. Next day they came to my office and replaced the power supply and main board as well, just to be in case.

The first comment is about the constant Tau.

I never heard of Tau so I had to look it up and came across this: "pi is a confusing and unnatural choice for the circle constant."

So now I am confused.

If a cicle has a diameter of 1 the circumference is pi.

Can someone explain in what context pi might be confusing?

Because the sinus/radians always relates to the radius instead of the diameter?

Yes but it has more costs involved than just this.

For example the statistics of the brands Sony and Canon are now wrong and the budget of advertising is still as it was yesterday. So the bookkeepers have a lot of exta work to get this straight.