Hacker News: netjiro

New comment by netjiro in "White Rabbit – sub-nanosecond synchronization for large distributed systems"

netjiro — Mon, 25 May 2026 06:50:32 +0000

delay is easy

jitter kills

New comment by netjiro in "Startup CTO's Handbook"

netjiro — Sun, 22 Oct 2023 08:30:50 +0000

Recordings are a great utility:

Having a record allows all kinds of automated followup, post analysis, etc. This level of business intelligence and actual understanding is helpful in improving organisation function and individual training long term.

Asynchronous is _a_ great next step beyond that:

Moving discussions and decisions async has been a massive improvement in the organisations I have helped. Goes against dogma and habit (with all the huge obstacles that come with it) but pays off quickly.

Discussions are more factual and evidence based.

Decisions are thought through and transparent.

Collective (and individual) memory of what has been discussed, decided, and why is much better.

Training people to be clear, succinct, transparent also help them not get bogged down in gut feeling, habit, dogma, ego, posturing, pestering, politics, etc.

And of course the immediate bonus of individually flexible scheduling and not killing efficiency by slicing everything to administration/manager-mode-time.

New comment by netjiro in "The world’s empty office buildings have become a debt time bomb"

netjiro — Mon, 26 Jun 2023 17:48:40 +0000

> I wish we could solve zoning and permitting ...

Perhaps we should learn from other places that have better solutions already? E.g: Japan? Singapore? etc.

Somehow many western countries have gotten stuck in red tape and the inability to learn from other cultures.

New comment by netjiro in "Startups drive commercialization of high-impact innovations"

netjiro — Fri, 09 Jun 2023 13:16:58 +0000

It is an uncomfortable risk for many, to back a likely long term winner over a sure current cash cow. Even if their own estimates say they should go for it. See it all the time.

And to make it even more short sighted, the idea won't go away, it will just take a little longer and then pop up in competing colours.

New comment by netjiro in "Google doesn’t want employees working remotely anymore"

netjiro — Thu, 08 Jun 2023 12:51:29 +0000

> a group of aligned people in the same physical working space will just dominate a similar group spread apart

Hard numbers from 20+ projects over 20+ years say the exact opposite. Hard core tech R&D projects, small and large.

When I compare the distributed all remote projects to those run in house, it is night and day difference.

New comment by netjiro in "When will global warming hit the landmark 1.5 ºC limit?"

netjiro — Mon, 22 May 2023 18:37:37 +0000

iirc: we are changing atmospheric CO2 many times faster than the PT Extinction!

... quick search [1]

[1] https://www.nature.com/articles/s41467-021-22298-7

New comment by netjiro in "'Algebra for none' fails in San Francisco"

netjiro — Mon, 17 Apr 2023 07:00:26 +0000

> I think it is a joke that

Standards change greatly with time and it is a joke to believe that applying the same standards to everyone will get a good outcome.

Anecdata: I would have loved to get the possibility to study higher math at high school level, at school. I had to dig it out on my own since the local school topped out after basic calculus, linalg, statistics. I was not alone.

Today I would estimate that top 5% could easily and happily handle multivariate, ode/pde, etc in high school given proper support and encouragement.

Top few percent learn several times faster than average. What is the point, other than ancient ideology, to slow them down and hinder their learning progress?

New comment by netjiro in "Nuclear power is too safe"

netjiro — Fri, 31 Mar 2023 06:14:30 +0000

Somehow we collectively forget/ignore that coal power releases many times the radioactivity of nuclear power, and that is just dumped directly into the air. The numbers are not directly apples to apples but absolutely lead to more life/health loss from fossil nuclear radiation contamination than fission nuclear radiation contamination.

E.g:

https://inis.iaea.org/collection/NCLCollectionStore/_Public/...

https://www.sciencefocus.com/science/do-coal-fired-power-sta...

New comment by netjiro in "Consultancies know less than they claim and cost more than they seem to"

netjiro — Tue, 14 Feb 2023 14:02:52 +0000

As long as the checklist catches more costly errors than the time to use it and the (very likely) negative secondary effects to critical thinking and innovation.

Love tools that help, eg checklists, when used right.

But over time they have a very strong tendency to become set-in-stone dogma, at which time they will create a priesthood and a very large dead zone where thinking and flexibility is no longer allowed.

New comment by netjiro in "Sexual loneliness: A neglected public health problem?"

netjiro — Thu, 26 Jan 2023 17:35:51 +0000

I wonder about the actual numbers here, and how they vary between cultures, regions, age groups, etc. From what I see from my single female friends 20% is waaay too high. Not trying to be a jerk here, just observation.

New comment by netjiro in "The Pretty Good House"

netjiro — Tue, 17 Jan 2023 16:33:46 +0000

> does not pencil out to replace the original windows

Depends on the cost of energy and the interior comfort level you want.

New comment by netjiro in "Numba: A High Performance Python Compiler"

netjiro — Tue, 27 Dec 2022 19:12:42 +0000

I prototype in python or whatever, then, if the project survives into market and has legs I either buy more hardware or rewrite the expensive parts in C++.

Reduces calendar time, risk, cost. And I'm likely to make better decisions once the code and market is better understood after the prototype is tested under real world conditions and the requirements have changed (like they always seem to do).

New comment by netjiro in "John Carmack Leaves Meta"

netjiro — Sun, 18 Dec 2022 11:48:58 +0000

Offload to local device with, yes. Offload to server farm elsewhere ... naaah. You have at most a few ms to compress - stream - decompress - refresh. Any latency, jitter, stutter, etc has a very negative impact in vr. Much more so than on a regular monitor.

New comment by netjiro in "John Carmack Leaves Meta"

netjiro — Sun, 18 Dec 2022 11:41:27 +0000

Do you have numbers of the percentage of people who do get motion sickness from vr? Perhaps 50% of the population not going vomity is a large enough market? Perhaps 10%? As devices get better the market will grow. I can definitely feel off at 60Hz, but no problem so far at 120 if the latency is kept to a minimum.

Plenty of people get seasick, but there are still quite a few of us who enjoy sailing a day through a proper October Storm.

New comment by netjiro in "Sperm counts worldwide are plummeting faster than we thought"

netjiro — Thu, 01 Dec 2022 17:08:28 +0000

Even in super socialized Sweden the first child costs around 180 000 USD (2021) [1] for the median example family. Second child is probably less expensive.

[1] https://seb.se/privat/livet/att-skaffa-barn/sa-paverkar-ett-...

New comment by netjiro in "Ask HN: Comment here about whatever you're passionate about at the moment"

netjiro — Sun, 06 Nov 2022 07:04:43 +0000

potential bullshit warning [1]:

Parents who take time for themselves and don't _just_ live for their kids tend to end up happier and with better relationships with their children as they grow up.

[1] I don't have children of my own, so wtf do I know. But: My lifestyle, spending a lot of time practically living with my friends and their families, allows me to get a fairly deep insight into a large set of varied families over the last 20y.

New comment by netjiro in "A sand battery could transform clean energy"

netjiro — Fri, 04 Nov 2022 17:54:27 +0000

Example of how much you'd have to "overbuild". Look at example temperature and incoming solar radiation around january - february. Graphs 1 and 3 [1]. And that's for Vantaa in the far south of Finland :)

[1] https://research.tuni.fi/uploads/2019/05/0a103135-p086568.pn...

New comment by netjiro in "Tesla engineers were on-site to evaluate the Twitter staff’s code, workers said"

netjiro — Mon, 31 Oct 2022 05:58:35 +0000

I know zero about twitter,

but I have inspected plenty of organisations where strong engineering teams are drowned by management bullshit. even found places where most of the individuals, engineering and management both, are arguably competent but the overall organisational decreptitude kills any and all effective work, no matter how heroic or skilled the individual and collective effort gets.

New comment by netjiro in "“There Seem to be 10 managers for every one dev at Twitter” – Elon"

netjiro — Mon, 31 Oct 2022 05:23:32 +0000

> for doing nothing

nope. plenty of stress, long hours, tons of work.

just very little product output. often even negative output.

New comment by netjiro in "Salary Transparency"

netjiro — Tue, 25 Oct 2022 11:55:02 +0000

ymmv: if "the cause" has technical or scientific elements and you are a skilled engineer or scientist your contribution of 1000h/y work on target is significantly larger than donating $1M/y.