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thdrdt

1,907 karma · joined November 5, 2019

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thdrdt··on Fastest star ever seen is moving at 8% the speed of light
But doesn't Einstein not talk about how you observe the clock when you move away from the clock? So the clock keeps ticking the same time but you can't observe it because you are traveling at the speed of light.

So when you travel away from the earth at the speed of light you can't see the rotarion of the earth. But when you move back to the earth you are still just as old as the people who were the same age as you when you left?

thdrdt··on Fastest star ever seen is moving at 8% the speed of light
Last week I watched the movie Interstellar and I still don't get why the main character could be younger than his daughter when he returns from space.

And I also don't get your comment. Probably because I don't get relativity.

If we send a clock into space it will just tick away seconds (a unit designed by people). When it will return back to earth years later in my mind it just ticked away the same amount of time as it would have on earth.

What am I missing about relativity?

thdrdt··on Factorio 1.0
The same with Train Sim. Waiting 5 minutes for a red sign is very realistic but there is no fun in it.
thdrdt··on Apple just kicked Fortnite off the App Store
Update policies on Android (I want to use my phone until it is completely broken) made me start to look at Apple. But then I realized it is not an alternative.

In another thread someone compared Apple with a dictatorship and this is right. Maybe you will feel safe but there is no freedom. And when you don't do as the dictator pleases you are in trouble.

Companies get too big and too powerful. Some say this is the beginning of a new world order, like the industrial revolution changed how the world was ordered.

thdrdt··on Rob Pike's Rules of Programming (1989)
It was more like dev & dev.

I am not criticizing anyone because I was just lucky to notice the query could be rewritten. But it was also the fact that I had a little more knowledge about how the db engine handles queries.

So we all looked in the right direction, we all found the bottleneck but the solution was different based on different knowledge.

thdrdt··on Hyperloop: Pipes of Fancy
This is why I don't get why gondola lifts are not more popular for both people and cargo.

Maybe in cities the wind is an issue.

thdrdt··on Rob Pike's Rules of Programming (1989)
It is all about lack of knowledge because checking where the bottlenecks are is one thing. Knowing why they are there is another.

A retailer app was very slow. The developers proposed a newer faster server with a newer Oracle version.

Then I took a look at one of the slowest queries. Changed it so it could use the indexes in a better way and the query went from +20 to 0.7 seconds.

The developers measured the query was slow, they checked the query used indexes and they were right that a server with more RAM and a newer Oracle version could improve the speed. But they missed that the query had to fetch a lot of data (using indexes) before it could start filtering the data. The only thing I did was to change the query so it could filter the data first.

thdrdt··on NSA's Tips to Keep Your Phone from Tracking You
When you have a location you can also use the gyroscope to track where the device is going after the starting point.

Almost like a video stream. Once in a while a keyframe and a stream of changes in between.

thdrdt··on Why Apple believes it’s an AI leader–and why it says critics have it all wrong
Is this true? Lately I noticed a change. Autocorrect now suggests based on previous words. I am not sure this use to be the case.

For example if I type "this is not the" it suggests the next word might be "case".

thdrdt··on Declining eyesight improved by looking at deep red light
Be very careful with this. Light sources can emit all kind of peaks of light you might not notice. For example a LED might look red but can also emit some infrared.
thdrdt··on The Hacker Way: How I taught my nephew to program
Why is this a pain?

I would be very unhappy if my kids would become something to please me but don't like it themselves.

thdrdt··on Satellite images of the Beirut explosion site – before and after
In a lot of videos you can see a fire next to the storage facility. It was also a very hot day. So most people believe the temperature in the storage raised enough to make the ammonium nitrate unstable.

Melting point: 169.6 °C

thdrdt··on The Mothers of the Mother of All Demos
The article is a little unclear about this. The Telstar satellites made it possible for IBM to send digital data but it would also stream analog video.

https://en.m.wikipedia.org/wiki/Telstar

thdrdt··on Treating children for worms yields long-term benefits, says new study
It is very hard to create unbiased IQ tests. There will always be cultural differences and differences in opportunity.

IQ tests should be taken with a grain of salt.

It also depends on what you think is important. Smart people are not always wise people.

thdrdt··on Autodesk criticised by architects
Well I hear a lot of praise about Fusion 360. So it's not all bad.

And I don't agree with your statement. Blender is a great example for this. Although it is not constraint based it is a full feature package which is very fast. Compare this to 3dsMax which is exactly what you describe.

thdrdt··on Autodesk criticised by architects
I can't speak for Revit but people are looking to switch to Blender from 3dsMax.

The problem is not that Blender can't do what 3ds can but it lacks industry standard tooling compatibility.

But still a lot of people in the industry are starting the switch to Blender. So change is coming.

thdrdt··on Autodesk criticised by architects
I can't read the article (server does not respond) but I believe it is not only about Autocad. I hear people complain about Revit and 3dsMax as well. What I mostly hear is: very expensive, lots of bugs, lags with new features and improvements.

The software gets the job done and is in the industry standards but people are starting to look somewhere else.

thdrdt··on Spotify CEO: musicians can no longer release music only “once every 3-4 years”
It doesn't matter. Just listen to what you like.

Even Mozart and Bach made crap music on a bad day.

I think in our time we are very fortunate to have the ability to discover music so easily. Personally I never listen to mainstream music but there is a lot more to discover.

thdrdt··on An update on our security incident
It depends on the attack.

For example if a Twitter user was logged in with a dongle but the attacker had access via social engeneered remote desktop access a dongle still could mean access to private data.

But yes. As far as I know Google and Facebook require them. Also Google sometimes require permission of an other co-worker to access data.

thdrdt··on We thought it was just a respiratory virus
There is still no proof for this but some scientists suggest people over 80 years old came in contact with a similar virus when they were young and now their immune system is overreacting (like when the second sting of a wasp can be much worst that the first).

In the Netherlands they found out by coincidence that some people who have a broken TLR7 gene don't fight the virus so the virus hits them very hard.

So there may be multiple reasons.

thdrdt··on Perseverance Toward Life Goals Can Fend Off Depression, Anxiety, Panic Disorders
The crew thought it would be a smooth ride. But then came a storm and they all gave up hope.

It is known that if you think the way to your goal is a smooth ride you can end up in a very big depression when things don't go as planned.

thdrdt··on Build a toy quantum computer at home
Is it possible / are there virtual or emulated quantum computers?

I read about the Kyndi model but could not find any implementation.

thdrdt··on City Map Generator – Create procedural American-style cities in the browser
Oscar Stålberg created this 'game' https://store.steampowered.com/app/1291340/Townscaper/

He also has some great talks on YouTube about generating city maps with cube marching and wave function collapse.

His online map generator: http://oskarstalberg.com/game/CityGenerator/

What I like about his approach is that it looks very natural European instead of American.

thdrdt··on Schools Beat Earlier Plagues With Outdoor Classes
It's about the transmission.

Since there is a lot of proof the current virus is airborne it helps to be in the open air or at least have a good ventilation system.

Schools could beat the spreading of the virus with well ventilated classrooms.

And for that matter: the US could beat the virus with good ventilated rooms. Note that dry air from airconditioners helps airosols to keep floating.

Without fress air: wear a mask!

thdrdt··on How the heart influences what we perceive and fear
I don't want to be rude because you are being helpful, but mindfulness is not the answer to everything. Mindfulness made me even more anxious because what I really needed was to see a psychologist.
thdrdt··on ProcMon for Linux
Every Microsoft post has comments like yours.

In the meantime the world has changed, and Microsoft has changed. And still people keep referring to eee as if this is still the same Microsoft.

All the big tech companies are now making money with services.

Microsoft made a lot open to Linux. Why? Because they like you to be on Azure.

I really think they are not going to extinct Linux. They are going to hook you on their services and make a lot of money out of it.

thdrdt··on Who is the greatest knife steel metallurgist of all time?
They have different grain flow. The strength is almost entirely depending on the metallurgy.
thdrdt··on Who is the greatest knife steel metallurgist of all time?
What a lot of people also don't know is that forging doesn't give the steel it's strength. Forging is done because it is way easier/cheaper than melting and casting it.

Quenching and tempering gives it it's desired strength.

thdrdt··on How to use math input in GIMP
I believe there is a lot of software that can do math on input. Holding and moving up/down to increase or decrease is also supported in a lot of software.
thdrdt··on I made a robot to cut my hair with scissors [video]
I like his way of thinking: don't create new parts for your prototype all the time when they don't work but just fix them quickly so they will work (with tape, nails, glue and what not). And only when the prototype works create new parts that look good.

First iterate, then make it look good.

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