jessriedel (u/jessriedel)

jessriedel commented on Ultrasound Cancer Treatment: Sound Waves Fight Tumors spectrum.ieee.org/ultraso... · Posted by u/rbanffy

elcritch · 2 days ago

Don't cancer metastases have more to do with cancer mutations allowing the cancer cells to form new tumors? Some cancer types tend do not develop the ability to colonize new tumors while others do regularly.

jessriedel · a day ago

It's quite a bit about that, but it doesn't detract from my point. Mechanical disturbance alone can spread cancer and increase mortality.

"The risk of tumor seeding after liver biopsy is 2.7%"

https://easl.eu/wp-content/uploads/2018/10/Hepatocellular-Ca...

Tissue containment systems for uterine morcellation

https://www.fda.gov/medical-devices/safety-communications/up...

jessriedel commented on Ultrasound Cancer Treatment: Sound Waves Fight Tumors spectrum.ieee.org/ultraso... · Posted by u/rbanffy

amypetrik8 · 2 days ago

What are the chances that breaking up a tumor this way seeds cancer elsewhere in the body?

Welp I put it to you like this - if you DON'T use this then you have a gorillion cancer cells among which very likely one genetically predisposed to adventure throughout the body as turbocancer.

If you use this, or radiotherapy, or whatever, presumably there is just a lump of dead tissue where the cancer was, signifying at best you cured it but at worst, knocked it down - specifically if you knocked it down from a gorillion to a million cells, genereally speaking if the body has been seeded or the tumor persists - the tumor will take longer to rebuild back up where it was. The latter is manifested as another such and such months of life, making the therapy "life extending"

jessriedel · 2 days ago

Cancers aren't perfectly optimized to metastasize, and metasteses (rather than, e.g., bulk pressure from the original tumor) are usually what kills you. It's perfectly possible that the procedure kills 90% or 99% of the cells in the original tumor but increases migration of the remaining cells such that the net effect reduces patient survival.

jessriedel commented on Bit flips: How cosmic rays grounded a fleet of aircraft bbc.com/future/article/20... · Posted by u/signa11

pengaru · 11 days ago

"my sycophant agrees" simply isn't adding anything of substance

jessriedel · 11 days ago

If that's your honest impression, it's incorrect and I urge you to spend more time working with frontier models.

jessriedel commented on Bit flips: How cosmic rays grounded a fleet of aircraft bbc.com/future/article/20... · Posted by u/signa11

RealityVoid · 12 days ago

You're missing that the systems were designed in the 90's and they had no edac on them but instead relied on redundancy and a consensus system. The fact bit flips happened is not why they grounded the things and updated sw, they grounded them to address the consensus algorithm in the other CPU that did not get the bit flips.

jessriedel · 12 days ago

Do you have a source on that? The current article describes the software very differently:

> In any case, the software updates rolled out by the company appear to be quick and easy to install. Many airlines completed them within hours. The software works by inducing "rapid refreshing of the corrupted parameter so it has no time to have effect on the flight controls", Airbus says. This is, in essence, a way of continually sanitising computer data on these aircraft to try and ensure that any errors don't end up actually impacting a flight.

jessriedel commented on Bit flips: How cosmic rays grounded a fleet of aircraft bbc.com/future/article/20... · Posted by u/signa11

pengaru · 12 days ago

> GPT agrees

What do you think this adds? These things are sycophant confident idiots; they will agree and agree they're incorrect at the slightest challenge in the same interaction.

jessriedel · 12 days ago

I'm quite aware of the limitations. That's why I bothered to post a comment. But it's definitely better to do due diligence by asking first, since many responses can then be checked. Mentioning it in the comment shows the effort, similar to "Google turned up nothing".

jessriedel commented on Bit flips: How cosmic rays grounded a fleet of aircraft bbc.com/future/article/20... · Posted by u/signa11

jessriedel · 12 days ago

I thought some combination of error correction and redundant systems was already widespread in airplanes to prevent cosmic-ray induced errors. (GPT agrees.) What am I missing? I've read multiple articles on this, and none of them address the fact that the problem, at the level of detail described in the article, should have been prevented by technology available and widely deployed for decades.

jessriedel commented on Waymo robotaxis are now giving rides on freeways in LA, SF and Phoenix techcrunch.com/2025/11/12... · Posted by u/nharada

superfrank · a month ago

I've ridden in Waymos in LA, SF, and Phoenix. You're right about them being a bit conservative, but only in Phoenix did I feel like that really slowed my ride. In LA and SF there was so much traffic that even if cars pulled away from us, we'd catch them at the next red light.

jessriedel · a month ago

I check Google maps ETA estimates when I get in a car in SF; they are accurate for Uber or Lyfts, but Waymos are absolutely slower there. This is especially, but not exclusively, true for routes where a human would take the 101 or 280, for obvious reasons.

jessriedel commented on Venn Diagram for 7 Sets moebio.com/research/seven... · Posted by u/bramadityaw

lisper · 2 months ago

> I decided to use colors rather than numbers or letters to identify each basic set, though I didn't use the same colors Newton did; mine are equidistant in the hue circle.

"Lawn green" and "medium spring green" look completely identical to me. Maybe I have a really obscure kind of color blindness?

jessriedel · 2 months ago

I have normal vision. I wouldn't say completely identical when they are side-by-side, but they are very close. It's effectively impossible to discriminate them when they are not side-by-side, which for this plot is very important.

The author's mistake was this: "[my colors] are equidistant in the hue circle". The problem is that the hue circle (at least under the parameterization scheme he used) is not uniform over discrimination, i.e., the ability to discriminate two hues is not invariant under displacing them an equal amount along the circle. (I presume this is one of those situation where it's misleading to think about three primary colors on equal footing because of quirks of human vision biology.)

First, the author could have chosen 7 hues at max-saturation that were easier to discriminate than this. But more importantly, he should have used the other color axes: saturation and brightness. dark red (~maroon) and light red (~pink) are a lot easier to discriminate, even when not next to each other, than the two shades of green he used.

jessriedel commented on Updated practice for review articles and position papers in ArXiv CS category blog.arxiv.org/2025/10/31... · Posted by u/dw64

pbhjpbhj · 2 months ago

I suspect that any editorial changes that happened as part of the journal's acceptance process - unless they materially changed the content - would also have to be kept back as they would be part of the presentation of the paper (protected by copyright) rather than the facts of the research.

jessriedel · 2 months ago

As an outsider that's a reasonable thing to suppose based on a plain reading of copyright law, but in practice it's not true. Researchers update their preprint based on changes requested by reviewers and editors all the time. It's never an issue.

jessriedel commented on Man still alive six months after pig kidney transplant nature.com/articles/d4158... · Posted by u/signa11

krackers · 3 months ago

But presumably the nerves between the brain and heart exist for a reason. What functionality do you lose by not reattaching them? Do things like "heart beating faster when nervous" depend on this nerve signaling, or is it done via other chemical signaling.

jessriedel · 3 months ago

Yes, nerves from the brain to the heart can influence heart beat (and other features like heart conduction and blood flow to the heart itself) in response to stress and exercise. Heart transplant recipients lose these features. They make poor marathon runners :)