robryk @robryk@qoto.org
I enjoy things around information theory (and data compression), complexity theory (and cryptography), read hard scifi, currently work on weird ML (we'll see how it goes), am somewhat literal minded and have approximate knowledge of random things. I like when statements have truth values, and when things can be described simply (which is not exactly the same as shortly) and yet have interesting properties.
I live in the largest city of Switzerland (and yet have cow and sheep pastures and a swimmable lake within a few hundred meters of my place :)). I speak Polish, English, German, and can understand simple Swiss German and French.
If in doubt, please err on the side of being direct with me. I very much appreciate when people tell me that I'm being inaccurate. I think that satisfying people's curiosity is the most important thing I could be doing (and usually enjoy doing it). I am normally terse in my writing and would appreciate requests to verbosify.
I appreciate it if my grammar or style is corrected (in any of the languages I use here).
Joined Nov 2020
@cafkafk What's mid-sized?
@me But if it's a single-person instance, you will be moderating it correctly by definition, right?
@grrrr_shark I've seen people point to https://fediblock.neocities.org/. I don't know whether it has anything to do with anything that was named "fediblock" in the past.
FWIW I am on an instance that blocks ~no other instance (and haven't created any blocks myself) and saw something in these directions (TERFy, humanity-denying, ...), IIRC, twice in the last 2yrs+. If my experience is reasonably typical, then "block on first offence" might be reasonable?
BTW. Note that you can both block instances (no communication possible whatsoever), silence them (something akin to unless you follow a user from there, you won't see their posts in timelines; i don't remember about replies). There was one other level of blocking that I can't find now, which was morally equivalent to blocking, except for remote users who are followed by a local user.
@cafkafk Aaaah, so `--html-extension` is crucial here (and I was very bad at reading the manpage). Thanks.
@cafkafk Will links from already-fetched files be followed if I use -nc? I once got the empirical impression that that wasn't happening and the manual was very unclear.
@cafkafk Have you figured out a way to make that resumable?
I am once again slightly-amusedly-enamored by Freefall:
http://freefall.purrsia.com/ff3900/fc03821.png
Helix: How was my story telling?
Sam: Not bad. You'll get better with practice.
Sam: Storytelling is an art that comes naturally to humans and sqids. It starts almost as soon as we can form sentences.
Dialog: My dolly wanted a cookie.
Sam: Robots see the world as it is and naturally tell the truth. It's a bad habit and with my help, one you'll learn to overcome.
@cafkafk The problem with that is that most(?) of child labor was unpaid, performed for the family.
@cafkafk Originally introduction of compulsory education was a big driver of limitations on child labor. Do you think the situation is different enough that that would not be a problem, or do you expect some specific replacement to mitigate that?
@maddiefuzz I didn't realize Apple ][ was so large. Thanks.
@andri @technomancy @blacksoulgem95
etymonline.com provides some historical explanation for at least some of them
Another interesting example is "before" which means "earlier in time" as well as "in front".
Similarly there are false friends between related languages that mean their opposites (e.g. zapomnieć means "to forget" in Polish, whereas запомнить means "to remember" in Russian).
@esheep Directly into the recipient? That requires coordination to avoid choking :P
@grrrr_shark On a practical note, IIUC you can drive in Swietzerland with whatever-you-got-when-you-gave-them-your-DE-license.
On a larger picture note, when I did the same I did tell them that I had two episodes of orthostatic syncope (get up -> suddenly decreased blood pressure -> pass out) and I don't remember being asked for anything unusual afterwards (I don't remember if the form even asked me enough for me to tell them that it was investigated). So, they're at the very least sillily inconsistent.
@cafkafk You might find the approach that apparently becomes more popular when the voting system is more issue-oriented interesting: https://250bpm.com/blog:163/#consequenceselectionturnout
Textbooks that make it easier to get a good understanding of the target material are rare. A common failure mode is to explain things "too fast", so that the reader gains no appreciation for e.g. why some results are nontrivial, or why some particular approaches to reasoning lead nowhere.
I've followed an approach of learning a bare minimum from an area to be able to understand what might be an interesting problem, what sorts of assumptions are typical etc. but _not_ anything that provides you with ideas on e.g. how to reason. Then you spend next two weeks of evenings noodling around the problem which obviously should be interesting. When you get to some more "traditional" way of learning that subject, you'll encounter the chosen problem soon and will be able to confront your approach to it with the one the textbook gives.
It's very likely an SPI EEPROM. I can't imagine a situation when you'd do something irreversible by rewriting its concepts, except:
- damaging the thing (e.g. by connecting power backwards or providing wrong supply voltage),
- flashing code that does something that damages the motherboard (I would expect that BIOS-code-that-damages-mobo is a thing, but it's very hard to accidentally mangle a BIOS into that form).
> Likewise, the capacitance between the signal layer and a ground plane is a feature, not a bug.
Do you mean that it being consistent and predictable is a feature, or that it being high enough is a feature? (IOW, would consistent lower capacitances be better?)
robryk
boosted
"it should be about as labor-intensive to wire wrap through-hole components as it is to solder them"
Mass production uses wave soldering. You simply insert all the parts into the board, soak the board into molten solder, and pull it out. bingo, the full board is soldered within seconds. You can't wrap all the wires within seconds."due to wire shape, unwanted capacitances are kept much smaller in wire wrap (compared to e.g. a 2-layer PCB),"
Due to physical construction, unwanted inductances are much higher compared to a PCB. Even for advanced wire-wrap boards with ground planes (people used them in the late 80s during wirewrap's last days), it's still difficult to match a PCB's performance. A typical 4-layer board's signal layer is 0.1 mm above the ground plane, a wire-wrap board it's typically 5 mm, causing a 40x increase of loop area."no need for explicitly making multi-layer PCBs: the problems of routing, possibly stacking layers (for >2 layer ones), coating vias, etc. just go away."
One huge motivation to use a multi-layer PCB in modern designs is not even extra layers for the signals, but to have solid power and ground planes that contain nothing but solid copper. A copper pour on a multi-layer PCB naturally forms microstrips, the simplest kind of microwave transmission line, which is required to support high-speed digital signal transmission. Likewise, the capacitance between the signal layer and a ground plane is a feature, not a bug. Because of its planar circuit nature of a PCB, characteristic impedance is tightly controlled and extremely reproducible. Overlapping wires over a ground plane do not have a consistent characteristic impedance.Even in lumped circuits and analog designs when controlled impedance does not matter, a solid ground plane is often still important to minimize loop area and parasitic inductance. Modern power MOSFET's switching speed is reaching 100 volts per nanosecond.
Standard wire-wrap construction is ill-suited above 10 MHz. Even back in the late 80s when electronics is made of really slow through-hole parts by modern standard, wire-wrap already started to show serious signal integrity problems.
---
But... Believe it or not. All of these problems I listed have been solved already in the 80s by combining the best of both world. The final next-gen invention was called "Multi-Wire" circuit board. It looks like a normal PCB but its inner layer uses insulated wires for connections, allowing overlapping traces. The ground planes and outer layers are similar to PCB. Reportedly,
IT can convert a multi-layer PCB design with 12 signal layers to a six-layer board with just two signal (wiring) layers.
But it was an highly expensive technology, and did not see much uses outside niche high-end applications. Today Hitachi is one of the few companies that still offer this service.https://www.swtest.org/swtw_library/2013proc/PDF/SWTW13-22.pdf
I enjoy things around information theory (and data compression), complexity theory (and cryptography), read hard scifi, currently work on weird ML (we'll see how it goes), am somewhat literal minded and have approximate knowledge of random things. I like when statements have truth values, and when things can be described simply (which is not exactly the same as shortly) and yet have interesting properties.
I live in the largest city of Switzerland (and yet have cow and sheep pastures and a swimmable lake within a few hundred meters of my place :)). I speak Polish, English, German, and can understand simple Swiss German and French.
If in doubt, please err on the side of being direct with me. I very much appreciate when people tell me that I'm being inaccurate. I think that satisfying people's curiosity is the most important thing I could be doing (and usually enjoy doing it). I am normally terse in my writing and would appreciate requests to verbosify.
I appreciate it if my grammar or style is corrected (in any of the languages I use here).
Joined Nov 2020
