Hacker News: mlwiese

New comment by mlwiese in "America's Geothermal Breakthrough"

mlwiese — Sat, 25 Apr 2026 22:51:12 +0000

Framingham, MA has a geothermal system using ground source heat pumps like what you are describing

https://www.smartcitiesdive.com/news/first-networked-geother...

New comment by mlwiese in "Analysis finds anytime electricity from solar available as battery costs plummet"

mlwiese — Sat, 13 Dec 2025 20:15:26 +0000

No, Lazard estimates the fuel cost is $22-$23/MWh for Gas Combined Cycle, and $13-$18/MWh for Coal. See pages 39-40 of https://www.lazard.com/media/0sopmth5/lazard-releases-2025-l...

Can You Fool a Self Driving Car? [video]

mlwiese — Sun, 16 Mar 2025 05:11:52 +0000

Article URL: https://www.youtube.com/watch?v=IQJL3htsDyQ

Comments URL: https://news.ycombinator.com/item?id=43377047

Points: 1

# Comments: 0

New comment by mlwiese in "Jeff Bezos' management rules are slowly unraveling inside Amazon"

mlwiese — Thu, 01 Aug 2024 03:05:02 +0000

There is no try, only do. -Yoda

New comment by mlwiese in "California Electricity Mix Live Dashboard"

mlwiese — Sun, 21 Apr 2024 19:33:41 +0000

Note you can toggle off sources in the chart by tapping on them in the legend.

Gas plants can respond quickly to changes in load, but they need to be up and running to do that. In the future this will be done with batteries but we don’t have enough of those yet. California does have about 20x more batteries than it did a few years ago, check out the Record Tracker link. There was a new record for battery discharging 5 days ago.

New comment by mlwiese in "Tesla’s Magic Has Been Reduced to Its Chargers"

mlwiese — Fri, 16 Jun 2023 07:02:12 +0000

Except pretty much everyone thinks the CCS2 connector sucks compared to the Tesla connector. The EU ought to mandate the Tesla connector instead. We're still in early days, no need to worry about the tiny number of cars that have already shipped.

Fact check: Is nuclear energy good for the climate?

mlwiese — Mon, 29 Nov 2021 15:28:22 +0000

Article URL: https://www.dw.com/en/fact-check-is-nuclear-energy-good-for-the-climate/a-59853315

Comments URL: https://news.ycombinator.com/item?id=29380926

Points: 5

# Comments: 1

New comment by mlwiese in "A new air-conditioning system manages without nasty gases"

mlwiese — Sun, 25 Jul 2021 20:33:05 +0000

You can use CO2 as a refrigerant. Non flammable and enables heat pumps to be practical at lower temperatures. Lots of products on the market. See https://r744.com

New comment by mlwiese in "Wi-Fi Devices as Physical Object Sensors"

mlwiese — Tue, 06 Apr 2021 01:24:23 +0000

This can be used to monitor someone's breathing in a non-invasive way, which would be good. Here's a startup that has been working on it: https://www.originwirelessai.com/technology

New comment by mlwiese in "Launch HN: Enode (YC W21) – API for energy consumption"

mlwiese — Tue, 16 Mar 2021 01:29:50 +0000

How do you differentiate your company from https://www.bidgely.com

An Army of Volunteers Is Taking on Vaccine Disinformation Online

mlwiese — Tue, 16 Jun 2020 20:06:37 +0000

Article URL: https://www.wired.com/story/can-a-keyboard-crusade-stem-the-vaccine-infodemic/

Comments URL: https://news.ycombinator.com/item?id=23543429

Points: 2

# Comments: 0

New comment by mlwiese in "Ask HN: Is there still a place for native desktop apps?"

mlwiese — Mon, 18 May 2020 01:29:59 +0000

There is movement away from stop-the-world GC, but not to reference counting. The movement is towards better GC.

The language Go has sub millisecond GC with multi-GB heaps since 2018. See https://blog.golang.org/ismmkeynote

Java is also making good progress on low latency GC.

Reference counting can be slower than GC if you are using thread safe refcounts which have to be updated atomically.

I don't want to have to think about breaking cycles in my data structures (required when using ref counting) any more than I want to think about allocating registers.

New comment by mlwiese in "What if we'd had better HTML-in-JS syntax all along?"

mlwiese — Wed, 13 May 2020 03:07:42 +0000

The modern equivalent is Hiccup and Clojure. https://github.com/weavejester/hiccup/wiki/Syntax

Clojure has literal lists using parens and vectors using square brackets. By using both you can mix code and markup in a readable way. It's great!

Thinking in a Pandemic: Good Science Is Good Science

mlwiese — Tue, 12 May 2020 23:02:22 +0000

Article URL: https://bostonreview.net/science-nature/marc-lipsitch-good-science-good-science

Comments URL: https://news.ycombinator.com/item?id=23161162

Points: 3

# Comments: 0

Wearing masks in public required starting April 22 in 4 SF Bay Area counties

mlwiese — Wed, 22 Apr 2020 01:39:38 +0000

Article URL: https://www.sfchronicle.com/bayarea/article/To-slow-spread-of-coronavirus-people-must-wear-15216767.php

Comments URL: https://news.ycombinator.com/item?id=22941171

Points: 1

# Comments: 0

25,000 Missing Deaths: Tracking the True Toll of the Coronavirus Crisis

mlwiese — Tue, 21 Apr 2020 21:49:16 +0000

Article URL: https://www.nytimes.com/interactive/2020/04/21/world/coronavirus-missing-deaths.html

Comments URL: https://news.ycombinator.com/item?id=22939699

Points: 7

# Comments: 0

Peer Review of “Covid-19 Antibody Seroprevalence in Santa Clara, CA”

mlwiese — Mon, 20 Apr 2020 22:43:01 +0000

Article URL: https://medium.com/@balajis/peer-review-of-covid-19-antibody-seroprevalence-in-santa-clara-county-california-1f6382258c25

Comments URL: https://news.ycombinator.com/item?id=22929638

Points: 3

# Comments: 0

New comment by mlwiese in "Hundreds of thousands in L.A. may have been infected with coronavirus: study"

mlwiese — Mon, 20 Apr 2020 22:35:15 +0000

This LA study has one of the same authors as the Stanford study (Neeraj Sood). It uses the same test and so it has the same issues with the false positive rate. An honest person would address those but I didn't see that in the press release.

This post describes the issues: https://medium.com/@balajis/peer-review-of-covid-19-antibody...

See also this thread: https://news.ycombinator.com/item?id=22924118