gandalf_der_12te
@gandalf_der_12te@discuss.tchncs.de
- Comment on How do you sleep at night? Please respond with a number 5 days ago:
2-3
- Comment on In 1995, a Netscape employee wrote a hack in 10 days that now runs the Internet 1 week ago:
yes, we have a german proverb for that:
de.wiktionary.org/wiki/wie_aus_einem_Guss
a lot of things turn out much better if you think about them long enough, and then implement them all at once in a short amount of time.
- Submitted 1 week ago to [deleted] | 1 comment
- Comment on Getting too expensive 1 week ago:
insert femboys can be exchanged for goods and services meme
- Comment on Where is heart?! 1 week ago:
classical elements refers to mechanical properties (solid, liquid, gaseous), it does not refer to chemical elements.
- Comment on same shit every day, on god 1 week ago:
building a pipe all the way to space would mean the pipe would have to sustain its own weight, which is the same problem as a space elevator. that doesn’t work either because there’s no material on earth strong enough to support its own weight over that distance.
- Comment on same shit every day, on god 1 week ago:
gas generators based on internal combustion
they heat air, afaik.
- Comment on same shit every day, on god 1 week ago:
fun fact: chloroplasts generate an electric potential across the cell membrane during photosynthesis. essentially, they have membrane proteins in their chloroplast membranes that push electrons from one side of the membrane to the other side whenever a photon hits the protein. It’s essentially a natural photovoltaic cell.
That electric potential is then used to create ATP in nature, while we just directly extract the electrical power through cables.
- Comment on same shit every day, on god 1 week ago:
you forgot the electrochemical battery
- Comment on same shit every day, on god 1 week ago:
that’s why IMHO it’s more important to classify the core coupling mechanism (e.g. photoelectric effect, electromagnetic effect) instead of classifying the total energy in -> energy out types.
- Comment on same shit every day, on god 1 week ago:
and we found it very early on
just FYI, the electrochemical battery was invented in 1800, while electromechanical generator was invented in around 1866.
- Comment on same shit every day, on god 1 week ago:
There’s only 3 major ways to transform different forms of energy into electricity, which are:
- solar panels (light -> electricity)
- mechanical engines/generators (mechanical movement -> electricity)
- electrochemical battery (chemical dipole -> electricity)
there’s a whole lot more, such as thermoelectric generator and piezoelectricity but these are the three significant ones.
- Comment on What did I forget? 1 week ago:
i’d define it as size of an svg file that represents the flag, since more complex flag -> more fundamental elements (rectangles, circles) needed -> bigger file size -> more entropy.
- Comment on What did I forget? 1 week ago:
- Comment on What did I forget? 1 week ago:
if you’re that online, you should consider going offline more, tbh, meeting people irl is great :P
- Comment on What did I forget? 1 week ago:
i’m not a fan of it at all, it was a country of rapists the way they invaded their neighboring countries.
- Comment on Is it completely impossible to do age verification without compromising privacy? 2 weeks ago:
same for alcohol then?
- Comment on Insulin 2 weeks ago:
instant diarrhea, haha, but yeah, it carries the point across quite well. some people can’t work wherever they want, at whatever job they want, because they have health conditions limiting their range.
- Comment on Insulin 2 weeks ago:
very interesting!
- Comment on Insulin 2 weeks ago:
caught between upvoting because you’re right and downvoting because it’s mean.
- Comment on Insulin 2 weeks ago:
this feels a bit like open software, just that the software involved is genetic code, which codes for a protein.
- Comment on Is it completely impossible to do age verification without compromising privacy? 2 weeks ago:
The problem is that it leaves a paper trail.
Grace also knows what number n got verified, and the identity of the user n. Later, the website can ask the age-verifying service who user n actually was. It requires that the age-verifying service cooperates with the website, though, but this could be mandated by law, which would create a single point of (privacy) failure.
PS: i love your writing style. It’s so simple and clear :)
Cryptography is a really complicated subject. You managed to express it very easily understandable.
- Comment on Is it completely impossible to do age verification without compromising privacy? 2 weeks ago:
Yeah a small false-positive rate will have to be accepted. This is the same like you can’t fully prevent minors from getting access to alcohol. Consider that their older sibling can buy it for them (at an increased price, ofc).
- Comment on Is it completely impossible to do age verification without compromising privacy? 2 weeks ago:
See my comment in this thread involving drawing a piece of paper from a box in real life. Since nobody knows which piece of paper you draw from a box, if many people do this at the same time, it’s impossible to establish an one-to-one mapping between age-verifying tokens and people’s identities.
- Comment on Is it completely impossible to do age verification without compromising privacy? 2 weeks ago:
I doubt this doesn’t actually leave a paper trail.
At some point, you send that nonce to an age-verifier service. So they can keep track of it, and if the 18+ website you visited at some point later wants to know your identity, they can ask the age-verifier service who asked for that nonce to be signed.
This involves that two organizations are corrupt, however: both the 18+ website and the age-verifying service. Law could mandate that they both cooperate, however, thus creating a single point of (privacy) failure.
I still believe it is doable, however. Check my other comment involving a piece of paper that is drawn from a box. My method relies on the fact that the age-verifying service doesn’t actually know which code they gave you, just that they gave you one. For digital services, seevices can always keep track of their input/output, which is not always possible in real life.
- Comment on Is it completely impossible to do age verification without compromising privacy? 2 weeks ago:
It is doable, i think. Consider:
You go to your local library. They verify you’re above the age limit (like they do at supermarkets when you try to buy alcohol: either look you in the face and recognize you’re clearly old enough, or have to show them some kind of id, details vary.)
You pick a code (put your hand in a box and draw a piece of paper at random). Nobody knows what code you picked except you. If lots of people do this at the same time, it’s impossible to accurately map codes to people’s identity.
You scan the code (like QR code) with your social media app that you use, and it associates the code with your account. Now everybody knows you have a valid code associated to your account, but nobody knows your identity.
The code could work something like a cryptographic signature, where you can show that you have a valid code without actually revealing the code, so others can’t simply copy it. That’s a technical detail that you need to leave to the programmers to accurately understand.
- Comment on Winding down my day off the right way 2 weeks ago:
hello? human rights department?
- Comment on It improves the morale of the future worker. 2 weeks ago:
Don’t cut the umbilical cord too short, btw. It will “turn inside” during growing up, and if you cut it too short at birth, then it leaves a hole in your belly later in life.
- Comment on Corn me up, snake 🐍🌽 2 weeks ago:
- Comment on It's the only logical future, captain. 2 weeks ago:
Can somebody explain to me how it’s supposedly “logical”?
We haven’t achieved “fully automated” on Earth for as mundane tasks as picking vegetables. What makes you think space travel would make full automation possible?
