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https://toot.cat/@dredmorbius
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Dred's HN CSS Madhackery: https://pastebin.com/gLXiqKyd
Dred's HN CSS Madhackery -- Dark Mode: https://pastebin.com/6PF3dCXH
Dred's Algolia CSS Madhackery: https://pastebin.com/HMp8Er30
email: username at Protonmail
Site designers: don't do this, please.
(Prophetably? ;-)
Though that rather invites the question of why browser defaults are so poor.
The fuels which afford the highest rates of storage tend to release it more slowly. Chemical explosives typically have about 1/10 the energy storage capacity (by mass) of fuels, as several people have pointed out.
Similar relationships exist for other forms of energy storage. For electricity, fuel cells, chemical cells ("batteries"), flywheel / reaction storage, and capacitors tend to offer a trade-off between total storage capacity and reaction time. Capacitors can react at intra-phase rates (that is, within a single 60Hz power cycle), whilst batteries and flywheels can take longer to come online.
See for example: "Battery Parameters" <https://www.monolithicpower.com/en/learning/mpscholar/batter...>.
<https://www.eff.org/deeplinks/2025/10/flock-safety-and-texas...>
Lightly discussed at the time (10 comments): <https://news.ycombinator.com/item?id=45879151>.
Generally, it's considered useful to post prior links with significant discussion. I usually consider that to be about 20 comments or so.
Typo? But it's hard to tell what.
There's very little which can be directly observed. We can't wiggle our heads to gain perspective (even waiting six months to utilise orbital parallax only works for some near stars). We're working with spectral lines, redshifts, "stellar candles" (Cepheid variables, Type 1a supernovae), orbital mechanics, gravitational lensing, and a grab-bag of other tricks to sort out what's happening tens, hundreds, thousands, millions, or billions of light years away. The rest is then extrapolated based on physical models: rates of stellar fusion, time to consume fuel, behaviour of accretion disks, etc.
TFA is pretty interesting in that it notes the specific estimation methodology used to assess SMBH masses.
The fact that any of this is possible is almost magic.
Except, of course, that it's actually science.
As to what should be tested: front-page items, possibly even a subset of those (top 10--15 of 30). That's going to be a limited set of items per day, though more than just 30. (I don't know how many items cycle through the front page on a daily basis, though I believe daily submissions as of 2022 were about 1,000/day (<https://web.archive.org/web/20220116193045/https://whaly.io/...>)).
Working this into the HN story-processing lifecycle might be a good call.
I'd much prefer not seeing a bunch of AI slop in submissions, by way of generated output. AI as part of the resarch process I think I could live with.
AI-generated content seems, definitionally, not to be intellectual in nature, and would seem to go against HN's prime directive. It also seems to make HN lose its collective mind, which has long been another mod consideration.
- TechCrunch: <https://techcrunch.com/2026/07/28/ebay-reaches-56m-settlemen...>
- ECommerceBytes: <https://www.ecommercebytes.com/C/blog/blog.pl?/pl/2026/7/178...>
- Reuters: <https://www.reuters.com/legal/government/ebay-former-executi...>
- AP News: <https://apnews.com/article/ebay-settlement-d0886f1036e198f77...>
- NY Times: <https://www.nytimes.com/2026/07/28/technology/ebay-settles-s...> (archive: <https://archive.ph/GD3IR>)
- Ars Technica: <https://arstechnica.com/tech-policy/2026/07/ebay-former-exec...>
- BBC: <https://www.bbc.co.uk/news/articles/cj039p238r5o>
- The Guardian: <https://www.theguardian.com/technology/2026/jul/28/ebay-hara...>
The New York subway has a top speed of 55 mph (88 kmh), but an average speed of 17.8 mph (28 kmh). I'm not sure what downtown intra-station peaks are, but suspect they're low on shorter sections. The London Underground is similar, with an average of 33 kmh (20 mph), max ~100 kmh (60 mph). This varies considerably by lines, the Bakerloo stock peaks at 45 mph; the Circle line averages just 24 kmh (15 mph). Chicago's 'L' is similar to NYC: max 55 mph, average ~20--25 mph.[3]
Note that averages include acceleration, deceleration, and dwell times (standing still at stations). But central portions of subways probably achieve low headways with relatively low peak speeds for congested track segments.
Notes:
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1. <https://parkingday.org/how-fast-do-new-york-subway-trains-tr...>
2. <https://tubenotifications.co.uk/insights/how-fast-is-the-tub...>
3. <https://parkingday.org/how-fast-does-the-subway-go-in-chicag...>
Reading fast, reading well, and reading widely - <https://news.ycombinator.com/item?id=32623766> - Aug 2022 (149 comments)
(Reposts after a year are fine.)