2024-12-13 02:04:49 veltas: hmm, I should learn about pic! pikchr is a popular new reimplementation of it from the sqlite people 2024-12-13 11:00:25 xentrac: pikchr looks cool. A lot of cool stuff from the sqlite sphere 2024-12-13 13:27:21 I've got a blog idea that's currently titled "Asbestos and 9/11" 2024-12-13 13:33:31 Because there is a whole load of stuff to do with asbestos and the WTC. There was a controversy soon after 9/11 about whether using the traditional asbestos fireproofing of the frame would have prevented some or all of the collapses 2024-12-13 13:34:01 And then also it turned out they had still used asbestos in some places and so the dust from the collapse has made people sick 2024-12-13 13:34:25 fireproofing *on* 2024-12-13 13:35:38 The experts apparently believe the alternative fireproofing was just as effective, I've not really looked into that and don't expect to 'find' anything there 2024-12-13 13:36:43 And this is all relevant today because we're surrounded by steel frame buildings that sometimes go up in nasty fires, or are attacked 2024-12-13 15:07:07 asbestos doesnt do a lot of good when its an inside job 2024-12-13 15:07:16 kidding :P 2024-12-13 15:17:53 asbestos is always an inside job 2024-12-13 18:14:48 I guess we can't necessarily expect there to be a substance that is both an excellent fireproofing material and also has no bad health effects. 2024-12-13 18:24:32 bme hands, with difficulty, a slab a granite. 2024-12-13 18:24:54 s?bme?/me? 2024-12-13 18:27:45 granite will get you more rads than sitting on a fence of a nuclear plant 2024-12-13 18:28:20 damn, you are right. 2024-12-13 18:33:39 thrig: wait, do they select spefically low rad wood for the fences? 2024-12-13 18:33:55 well, there needs to be a lot of granite, such as at train stations encased with granite as you might find somewhere in New York 2024-12-13 22:16:24 Zarutian_iPad: wood is made almost entirely of carbohydrates, and none of carbon, hydrogen, and oxygen is very radioactive. even the 0.1–1.0% "ash" is mostly potassium and calcium, which are also not very radioactive 2024-12-13 22:17:00 Zarutian_iPad: also, lseek() allows C programs to do relative seeks on potentially unbounded read/write files, so you can implement a Turing machine that way. A thing I'm not clear about is whether C requires the capacity of each memory location to be bounded. Could you maybe just store an arbitrary-precision integer in each memory location, and address memory by using those arbitrary-precision integers 2024-12-13 22:17:06 as pointers? 2024-12-13 22:20:57 cf. https://en.wikipedia.org/wiki/Wood_ash#Elemental_analysis 2024-12-13 22:22:41 " A thing I'm not clear about is whether C requires the capacity of each memory location to be bounded." it has to be for sizeof to work 2024-12-13 22:24:30 well, it clearly has to be a finite and fixed number of `char`s, yes 2024-12-13 22:24:49 but is there anything that requires `char` to not be an arbitrary-precision integer? 2024-12-13 22:24:55 yes, CHAR_BIT 2024-12-13 22:25:27 and if your next question is whether a bit can be of arbitrary precision in c, i don't know LOL 2024-12-13 22:25:28 but `signed char` isn't guaranteed to wrap at `2**CHAR_BIT` 2024-12-13 22:25:42 because signed overflow in C is undefined behavior 2024-12-13 22:28:11 I guess I've maybe redefine the problem to something uninteresting though 2024-12-13 22:28:21 hmm 2024-12-13 22:29:20 because obviously a hypothetical C implementation can define some undefined behavior as implementing a truly unbounded Turing machine, but at that point what you're writing the Turing machine in isn't really C anymore 2024-12-13 22:29:36 well, imo the stream seeking point made the finite memory point moot long ago 2024-12-13 22:30:00 s/finite addressing/ 2024-12-13 22:30:57 s/memory you know what i mean 2024-12-13 22:30:57 chatgpt do the sed replacement thing for me