Hacker News: mjan22640

New comment by mjan22640 in "Why Everything in the Universe Turns More Complex"

mjan22640 — Mon, 14 Apr 2025 20:36:49 +0000

Reproduction is not really a purpose. What makes copies of itself, happens to persist.

New comment by mjan22640 in "Drag racers are ditching superchargers for scuba-style tanks and compressed air"

mjan22640 — Tue, 08 Apr 2025 09:09:55 +0000

I guess the cooling alone cannot reach the density (and oxygen amount) necessary for the designed power output.

Yes, they put in the energy to compress the air 'offline' and then have that free to propel the vehicle. The cooling of the charge also improves the efficiency, the useful energy output is proportional to the temperature difference before and after the combustion.

A high capacity intercooler would be an interesting experiment also in utility vehicles.

New comment by mjan22640 in "Drag racers are ditching superchargers for scuba-style tanks and compressed air"

mjan22640 — Tue, 08 Apr 2025 08:27:14 +0000

An aluminium part with 105/72 cross section of the titanium will have the same modulus and incidentally the same weight.

Aluminium is also significantly cheaper, and easier to machine.

Titanium (or high strength steel, which is the strongest both per area and per weight and also the most expensive and difficult to machine) would be used where the volume of the part would be a concern.

New comment by mjan22640 in "Drag racers are ditching superchargers for scuba-style tanks and compressed air"

mjan22640 — Tue, 08 Apr 2025 07:16:09 +0000

> Also how they use aluminum for the connecting rods instead of stronger and stiffer metals like titanium

The 7000 aluminium alloys are similar to titanium in strenght/weight

New comment by mjan22640 in "Drag racers are ditching superchargers for scuba-style tanks and compressed air"

mjan22640 — Tue, 08 Apr 2025 07:00:22 +0000

The 10psi is still essential, saying 'it's not boost like a turbo or supercharger' is not entirely correct.

New comment by mjan22640 in "Giant, fungus-like organism may be a completely unknown branch of life"

mjan22640 — Fri, 28 Mar 2025 07:10:38 +0000

> Who can understand and remember that?

Anybody who is interested in it

New comment by mjan22640 in "OpenAI asks White House for relief from state AI rules"

mjan22640 — Fri, 14 Mar 2025 05:22:51 +0000

Competitive advantage is anti competitive from the logic of the matter.

New comment by mjan22640 in "Cognitive Behaviors That Enable Self-Improving Reasoners"

mjan22640 — Thu, 06 Mar 2025 09:47:10 +0000

In the setting you describe I think it will _reduce_ the errors to 20%

New comment by mjan22640 in "We're Charging Our Cars Wrong"

mjan22640 — Wed, 05 Mar 2025 06:56:32 +0000

It is actually practical position for an automated swap. You drive to the position, the door on the ground open, the robot pulls the old battery and installs the new one, no hassle.

New comment by mjan22640 in "How to change your settings to make yourself less valuable to Meta"

mjan22640 — Tue, 25 Feb 2025 07:44:41 +0000

Send them an invoice for the rental of your screen space to display ads.

New comment by mjan22640 in "Ancient-DNA study identifies originators of Indo-European language family"

mjan22640 — Wed, 12 Feb 2025 07:36:27 +0000

All steppe nomads are culturally descendent from Yamna.

New comment by mjan22640 in "USA restricts Swiss access to AI computer chips"

mjan22640 — Mon, 27 Jan 2025 08:46:28 +0000

I guess the comparison to drinking a poison and having to not work, which sounds like you think that taxes are damaging. Taxes are the whip part of the monetary system, that compels everybody to work significantly more than they would otherwise, and which is behind the good things that you attribute to corporations.

New comment by mjan22640 in "Astronomers seek global ban on space advertising"

mjan22640 — Mon, 27 Jan 2025 00:09:22 +0000

"Universal"

New comment by mjan22640 in "Satellite powered estimation of global solar potential"

mjan22640 — Thu, 19 Dec 2024 22:54:54 +0000

Joules is the solution to both the problems (the second is that Wh for energy is as silly as speed hours for distance)

New comment by mjan22640 in "What is entropy? A measure of just how little we know"

mjan22640 — Sun, 15 Dec 2024 06:55:39 +0000

Entropy is the opposite of potential.

New comment by mjan22640 in "8 months of OCaml after 8 years of Haskell in production (2023)"

mjan22640 — Tue, 03 Dec 2024 08:28:24 +0000

Such a pinnacle would be Agda. Haskell has mathematical holes.

New comment by mjan22640 in "Air traffic failure caused by two locations 3600nm apart sharing 3-letter code"

mjan22640 — Tue, 19 Nov 2024 06:19:01 +0000

The title sounds like an AMD cpu issue.

New comment by mjan22640 in "Rats learned to drive"

mjan22640 — Tue, 19 Nov 2024 06:11:16 +0000

Humans are apes.

New comment by mjan22640 in "Memories are not only in the brain, human cell study finds"

mjan22640 — Sun, 10 Nov 2024 07:45:37 +0000

Rabies virus induces the same behavior across different species (the victims in terminal state are terrified by swallowing liquids).

New comment by mjan22640 in "Mitochondria Are Alive"

mjan22640 — Sat, 09 Nov 2024 06:53:15 +0000

The benefit of mitochondria is in the isolation of the high power reactions, that involve chemically aggressive elements, from the rest of the cell. That allows for high energy throughput without self damage. Cells that do not have mitochondria run the same or analogous power producing reactions, but at a much lower volume, to keep the damage sustainable. An alternative option to mitochondria would be to evolve some means for isolation of the power production.