Hacker News: jahnu

New comment by jahnu in "Go 1.27 Interactive Tour"

jahnu — Sun, 02 Aug 2026 14:03:44 +0000

I was using the STL in 1994 with Zortech C++

New comment by jahnu in "A California aquifer may have crossed the point of no return"

jahnu — Fri, 31 Jul 2026 04:47:12 +0000

Exactly. It’s been done to enable luxury.

New comment by jahnu in "It's getting harder to focus every day"

jahnu — Fri, 24 Jul 2026 14:34:12 +0000

Honestly, as fun as the film is I’ve noticed people very rarely mention that disturbing premise.

New comment by jahnu in "How we can reduce traffic congestion"

jahnu — Mon, 13 Jul 2026 12:22:11 +0000

Induced demand is a real, observed phenomenon for both roads and public transport. However, because of density differences, it is generally easier to increase service frequency for public transport than to add lanes for low-density road traffic.

Empirically, this pattern is observed repeatedly.

New comment by jahnu in "Why American ambulance rides are so expensive"

jahnu — Thu, 09 Jul 2026 23:22:20 +0000

If you limit it to say the top 20 developed countries how does it look?

New comment by jahnu in "Meta reuses old RAM in new servers with custom bridge chip"

jahnu — Thu, 09 Jul 2026 11:52:47 +0000

https://www.reddit.com/r/Semiconductors/comments/r1dqmw/how_...

A Reddit user explains a bit here.

New comment by jahnu in "Microsoft reveals why Windows 11 keeps saying a file is in use after closing app"

jahnu — Tue, 30 Jun 2026 14:28:59 +0000

I seem to remember that you could, however, rename the file for a similar effect on Windows.

New comment by jahnu in "US battery manufacturing output continues to break records"

jahnu — Mon, 15 Jun 2026 23:09:48 +0000

Something like the IRA but started years ago. They invest and subsidise and tax-incentivise in their own industry but do use competition within their own market to weed out losers.

New comment by jahnu in "Palantir loses legal challenge against Swiss investigative magazine"

jahnu — Sat, 13 Jun 2026 07:41:21 +0000

I thought RAND was just a contraction of Research And Development?

New comment by jahnu in "How JPL keeps the 13-year-old Curiosity rover doing science"

jahnu — Wed, 10 Jun 2026 21:23:51 +0000

I’m no expert of course but I get the impression that we’re trying to run before we can walk. Many more robotic missions and way more basic research done more scientifically first could quite plausibly get humans there quicker in the end. Reading A City on Mars I found myself thinking this is many orders of magnitude more complicated than Apollo and will take more time.

New comment by jahnu in "Wind and solar generated more power than gas globally in April 2026"

jahnu — Thu, 04 Jun 2026 15:20:25 +0000

Keep hammering the point that they are cheaper. If they are open to more advanced discussion point to the amazing structural changes that batteries are only starting to bring. Tell them something that sounds mildly like science fiction but is in fact happening already and will be HUGE. E.g. the battery you’ll have in your AC/stove/car will save you money or even make you money when part of a smart mesh of DERs.

Maybe I’m too optimistic :)

New comment by jahnu in "California moves to exempt Linux from its age-verification law after backlash"

jahnu — Mon, 25 May 2026 18:37:42 +0000

Has this idea been discussed when drafting legislation? I mean are they aware of it but dismissed it for any reason or no stated reasons?

New comment by jahnu in "Ads on Apple Maps"

jahnu — Thu, 07 May 2026 08:25:45 +0000

Can you link to a good article or post about this?

Thanks!

New comment by jahnu in "Newton's law of gravity passes its biggest test"

jahnu — Mon, 04 May 2026 18:10:18 +0000

There are galaxies that appear to be free of dark matter and rotate accordingly. How does MOND account for that?

My understanding is that these observations are a fatal blow to any serious MOND models.

New comment by jahnu in "Germany Overtakes US in Ammunition Production Capacity"

jahnu — Wed, 29 Apr 2026 13:50:37 +0000

Definite risk of a monkey paw curling. But I assume he's less chaotic.

New comment by jahnu in "Germany Overtakes US in Ammunition Production Capacity"

jahnu — Wed, 29 Apr 2026 08:32:15 +0000

This is the truth. It would only take half a dozen Republicans to stop the madness now so the obvious question is why don't they?

The political system and elite institutions have failed their country. Does the US self correct with the next two election cycles? Hard to believe right now.

New comment by jahnu in "The abandoned war: Why no one is stopping the genocide in Sudan"

jahnu — Tue, 21 Apr 2026 14:33:10 +0000

Doctors Without Borders (MSF) are also there

https://www.msf.org/conflict-sudan?page=0

New comment by jahnu in "All phones sold in the EU to have replaceable batteries from 2027"

jahnu — Mon, 20 Apr 2026 14:14:07 +0000

Last time I checked I’d have to leave my phone for a couple of days and the glue factor meant they wouldn’t guarantee it would come back perfectly. My assumption is this might make it a more trivial change.

New comment by jahnu in "All phones sold in the EU to have replaceable batteries from 2027"

jahnu — Mon, 20 Apr 2026 14:10:16 +0000

Maybe. Maybe not. If my local phone and phone accessories shop can do it for little money in 15 minutes then the current calculus changes for a heck of a lot of people.

New comment by jahnu in "IEA: Solar overtakes all energy sources in a major global first"

jahnu — Mon, 20 Apr 2026 10:59:41 +0000

Just to add to your point; The final energy demand is much less than the primary energy we produce due to the energy costs of extraction, refining, transportation, and inefficient end use.

According to Kingsmill Bond (great name btw) on Dave Roberts' Volts podcast if we magically could replace all fossil energy with renewables today the final energy use would only be ~30% of today's final energy use.

"We’re pouring, from our calculations, two thirds of the primary energy into the air and wasting it." - Kingsmill Bond

https://www.volts.wtf/p/clean-electrification-is-inevitable