David Sainez
davidsainez.com
David Sainez
@davidsainez.com
woke tech bro
he/him
Reposted by David Sainez
A 21-year-old in Santa Ana was permanently blinded in one eye after a DHS agent fired a “less-lethal” round at close range.

K’s gofundme is here

www.gofundme.com/f/stand-with...
Donate to Help ICE Protestor After being shot by Feds, organized by Sarah Gallimore
Posting on behalf of my friend: On Friday, 1/9, hundreds protester… Sarah Gallimore needs your support for Help ICE Protestor After being shot by Feds
www.gofundme.com
January 14, 2026 at 7:45 PM
Bari Weiss speedrunning Ls
UPDATE: Jack Daniel’s parent co. Brown-Forman tells me it has nothing to do with CBS’ “Whiskey Friday” concept. “Jack Daniel’s is not involved in any such segment, nor do we have any awareness of the segment and any potential partnerships or sponsorships.”
Update — Here is what the new apparent CBS News segment "Whiskey Fridays with Tony Dokoupil" may look like:
January 14, 2026 at 3:26 PM
Reposted by David Sainez
The FBI searched the home of a Washington Post reporter seeking classified state documents. Nothing she wrote about could be considered classified. They simply want to suppress dissent via intimidation. Don't let them. Here is what she wrote. Please share.
www.washingtonpost.com/politics/202...
I am The Post’s ‘federal government whisperer.’ It’s been brutal.
One reporter’s effort to show how Trump was transforming government brought her 1,168 new sources — and nearly broke her.
www.washingtonpost.com
January 14, 2026 at 2:11 PM
Open social is the future
We’re excited to share that Eurosky now has a supporting legal entity, @modalfoundation.bsky.social - a new nonprofit dedicated to making open social tech viable at scale. Big Tech’s dominance can feel inevitable, but it doesn’t have to be that way.

modalfoundation.org
Modal Foundation
Supporting decentralized social tech and open standards to create trustworthy, public-interest social media alternatives and ensure access to vital information.
modalfoundation.org
January 12, 2026 at 5:49 PM
Over 160 years later, Minnesota's courage still refuses to waver
2nd July 1863. Battle of Gettysburg. For perhaps the only time in the entire war the Confederates seem to be winning.

Dan Sickles, commander III Corps, is ordered hold on Cemetery Ridge. For reasons unknown he advances. Broken, his men begin to flee.

This is the moment on which the war depends /1
January 11, 2026 at 9:10 AM
Reposted by David Sainez
If you are anxious and sad about the state of the world, that's fine, and there are plenty of strategies for dealing with that. But I think you already know that drive-by online dooming isn't a strategy. It's selfish and adolescent. It's a contagion that only spreads the worst of you, not the best.
January 8, 2026 at 3:51 AM
Reposted by David Sainez
Many of you have become drama-addicted doomers, and you seem to think it's important for the rest of us to join you.

Yes, things are bad. But change is within our power. Grow up. Act like sober, responsible adults in a democracy instead of cynical, all-is-lost teenagers.

Now get off my lawn.

/5x
January 10, 2026 at 2:04 AM
Impeccable aura
I saw this video of a Vietnam vet in the fur coat yelling at ICE and thought to myself, "this is missing something," before I realized, "Ah, of course, the Ether instrumental. It's so obvious."
January 9, 2026 at 8:52 PM
Reposted by David Sainez
This is a really good feed and it's become my go-to for Bluesky since I learned about it last week. I am an idiot so I don't know what makes it different, but it is better.
Enjoying the For You feed? Give it a like ♡ to help more people discover it: bsky.app/profile/did:...

The more people use it -> the more feedback we get -> the better we can make it for you.
January 6, 2026 at 10:56 PM
Reposted by David Sainez
It's funny how Zohran's tactic appears to be showing up to things that are well-known problems and going "wait why haven't we fixed this yet"
January 6, 2026 at 6:07 PM
Reposted by David Sainez
That said, we know people want more safety tools, so @eugenevinitsky.bsky.social and I are building them!

Here's what that looks like in our client. My post got a lot of interactions and then a big account reposted it, so alerts showed up and I have tools to deal with it.

Give us more ideas!
January 5, 2026 at 9:59 PM
I oscillate between both ends a couple of times per week
Example of great communication between people at two different levels of the skeptic–believer continuum.
Ok:

Write a python package that does multivariate Nadaraya-Watson and local polynomial kernel regression with homo-/heteroscedastic goodness of fit checking and automatic crossvalidated order and bandwidth selection as an sklearn (fit/predict) compatible class.
January 4, 2026 at 7:14 PM
If it aint broke...
"save systems should dynamically handle object IDs and automatically populate the serialized data of every object that requires save states, and then for dialogue progression it needs to-"

team cherry:
WRONG. 1400 hardcoded fields in PlayerData.cs
December 16, 2025 at 9:20 PM
Reposted by David Sainez
'Souls Tied'

A deeply personal, and very special, image to me. Taken back in 2021 at the iconic Dark Hedges.

This image won both 'World Landscape Photographer 2022' & the 'UK Landscape Photographer Of The Year - Black & White' category.

#landscapephotography
#northernireland
#darkhedges
December 14, 2025 at 9:42 AM
Reposted by David Sainez
These Ukrainian girls are risking their lives defending freedom, showing far more courage and “ethos” than self-styled “warriors” whose patriotism peaks in killing defenseless castaways. Let's stand together & support decency! Still €4,300 to go: euromaidanpress.com/lets-support...
December 8, 2025 at 12:44 PM
Fascinating. Wasn’t there also a recent study about creatine and sleep? I wonder if there is some connection there?
Animals Sleep Because Electrons Leak
The need for sleep likely evolved to get rid of toxic molecules from the mitochondria, a landmark study shows using sleep-deprived flies.
Written byAndrea Lius, PhD

www.the-scientist.com/animals-slee...

#neuroscience #research #sleep #evolution #education 🧪
Animals Sleep Because Electrons Leak
The need for sleep likely evolved to get rid of toxic molecules from the mitochondria, a landmark study shows using sleep-deprived flies.
www.the-scientist.com
September 21, 2025 at 1:17 AM
Reposted by David Sainez
Skywriter is dedicated to accessibility. Explore our keyboard navigation demo for just one of the many benefits available when you share your content with Skywriter.
Did you know that 1 in 4 working-age adults have a dexterity difficulty or impairment? [1] That's why Skywriter is built with keyboard navigation and clear focus indicators. Our design ensures your readers can engage with your long-form writing without barriers.
Skywriter keyboard navigation
YouTube video by David Sainez
www.youtube.com
June 25, 2025 at 9:53 PM
Reposted by David Sainez
If your response to hearing that a bunch of people died in a flash flood is anything other than heartbreak and compassion I think you might be the baddies
July 5, 2025 at 4:19 PM
Hi did you happen to disable the replies before the bot could reply with the link? You can also use a quote post to unroll if you want to disable replies. @unroll.skywriter.blue
So I went to see if Mike Brock, the author of this, is on Bluesky. He is, but he's blocked by the "very British transphobe" list. Curious. I sought out more info b/c much as I agree with what he says, I noted some glaring blind spots, too. We didn't just suddenly get a fascist gov out of nowhere.

🧵
"authoritarianism thrives in ambiguity. It requires linguistic fog to operate. It depends on our unwillingness to call things by their proper names. Every euphemism is a small surrender. Every hedge is a tiny collaboration. Every refusal to speak plainly is a gift to those who profit from confusion"
July 3, 2025 at 12:07 AM
A better Discover algorithm is crucial for Bluesky's success. Anyone have good ideas or know someone willing to take on the role?

🤖🧠 #mlsky
A couple comments about what I’ve been learning about algo engineering, but first off: if you’re interested in helping us improve Discover and all of our algorithmic systems, we are hiring algo engineers jobs.gem.com/bluesky/am9i...
June 30, 2025 at 4:24 AM
Reposted by David Sainez
bluesky feature idea
June 29, 2025 at 10:44 PM
Great and immediately practical piece by @asmartbear.com. A lot of his writing is useful when reasoning about complex/fuzzy systems in general.

longform.asmartbear.com/roi-rubric/
Fermi ROI: Fixing the ROI rubric
Traditional rubrics fail to reveal the best answers, or how to explain those answers to others. After explaining why, the following system solves both failures.
longform.asmartbear.com
June 29, 2025 at 7:47 PM
Back in the 1960s and 70s there was a major party candidate who the party establishment & the media thought was too far outside the mainstream. He shockingly won a California election he wasn't supposed to, then 14 years later he became President & fundamentally transformed his party. It was Reagan.
June 26, 2025 at 11:41 PM
Reposted by David Sainez
National Guard members accompany their own mother to her immigration appointment in order to protect her from ICE.
June 19, 2025 at 5:51 PM
Reposted by David Sainez
This drum circle is a sacred honor in memory of slain MN State Legislator Melissa Hortman, at the candlelight vigil
June 19, 2025 at 3:06 AM