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David J. Gillcrist

@davidjgillcrist.com
653 followers 277 following 251 posts

Mathematician • PhD Candidate • Science Educator • Unabashedly Confused Person • Dad Website: davidjgillcrist.com Landscape geometry-focused, optimal experimental design researcher Banner: Rings of dry ice vapor trapped by acoustic radiation force

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David J. Gillcrist @davidjgillcrist.com · 05/05/2026
Thank you, Andrew! I'll take a look and see what designs would look best on a onesie.
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David J. Gillcrist @davidjgillcrist.com · 03/05/2026
#MathSky I'm desperately looking for some genuine math-based clothing for my newborn daughter. I'm hoping to find some stuff made by someone in the community, I'm trying to avoid generic, mass-market kind of stuff found on Amazon and the like.
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The Struggling Scientists @thestrugglings4.bsky.social · 15/01/2026
There goes several months of hard work🥲
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Raj Raizada @rajraizada.bsky.social · 29/10/2025
The new surface-colouring option in @desmos.com 3D allows a cute way of visualizing conic sections. www.desmos.com/3d/fiv5gnltdl (The option to have translucent surfaces doesn't save with the graph itself, so needs to be re-toggled on. It's important for seeing the full curves) #MathSky #iTeachMath
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Bruce Y Lee @bruceylee.bsky.social · 28/10/2025
How New Trump Multiyear Policy Makes NIH Grants Even Harder To Get Here’s my coverage in @forbes.com of this 🛟 🧪 😷 #AcademicSky #MedSky #episky🩺 #HiSciSky Public Health #science www.forbes.com/sites/brucel...
forbes.com
How New Trump Multiyear Policy Makes NIH Grants Even Harder To Get
The new Trump administration multiyear funding policy for NIH grants has dropped National Cancer Institute grant funding rates from one in 10 applicants to one in 25.
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David J. Gillcrist @davidjgillcrist.com · 23/09/2025
Moral of the story: if you catch someone saying "Trump has a 'majority' mandate," you can just tell them this. Okay. I promise I'm done now 😁
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David J. Gillcrist @davidjgillcrist.com · 23/09/2025
Also, to correct/specifiy my own math. If the tally error rate is applied only to the remaining, non-Trump votes you get ≈49.801%, but if you apply the rate to all the votes cast but miraculously say none of those are in Trump's votes you get ≈49.806%. Regardless, the point's still the same 😅
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David J. Gillcrist @davidjgillcrist.com · 23/09/2025
more than 50% of votes cast. A majority voted for someone else. Perhaps this individual was missing sufficient information on how to interpret properly what winning the majority of the electoral college votes means. But, either way, a "majority" mandate, Trump has not. (4/4)
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David J. Gillcrist @davidjgillcrist.com · 23/09/2025
the stops for Trump, he still lands with merely a plurality of votes. A large plurality albeit, but only a plurality nonetheless. He may have done better in this election than either of the previous two he ran in, but that doesn't make him something he's not, that being a candidate who won (3/4)
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David J. Gillcrist @davidjgillcrist.com · 23/09/2025
i.e. 1 out of every 10,000 votes counted is inaccurate, and say all those inaccuracies are in Trump's favor, that raises his total count to 77,310,374, putting his percentage at ≈49.801%. Assuming we're defining "majority" reasonably as winning 50%+1 of votes cast, even when pulling out all (2/4)
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David J. Gillcrist @davidjgillcrist.com · 23/09/2025
It's also funny because, according to the FEC's Official 2024 Presidential General Election Results, the total number of votes cast was 155,238,302; 77,302,580 of which were for Trump. Meaning he received ≈49.796% of the popular vote. Even if we use an exceptionally large tally error of 0.01%, (1/4)
fec.gov
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David J. Gillcrist @davidjgillcrist.com · 23/09/2025
Sooo, when are we gonna get a collaboration between Noah Kahan and Canada's Noah Kahan (i.e. Cameron Whitecomb)? #Canada #Music #CanadianMusic
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The Women In Science Archive @wisarchive.bsky.social · 10/09/2025
Wishing a happy 83rd birthday to NASA mathematician and researcher Christine Darden, who specialized in the analysis of supersonic noise and research into its reduction. She was the first Black woman at NASA to reach Senior Executive Service status. #WomenInSTEM #NASA #MathSky 🧪🚀
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Fancy Comma, LLC @fancycomma.bsky.social · 12/09/2025
We published this on the @fancycomma.bsky.social blog and it feels very true right now, as it has always been, in my experience. Read: fancycomma.com/2025/06/07/f... #SciComm #SciPol
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David J. Gillcrist @davidjgillcrist.com · 08/09/2025
Hmmm 🤔, do mathematicians count?
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David J. Gillcrist @davidjgillcrist.com · 15/08/2025
I forget where I originally saw this, but it's one of my absolute favorite memes. #MathSky #iTeachMath #MathMemes #ScienceMemes
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David J. Gillcrist @davidjgillcrist.com · 05/08/2025
This meme probably best describes my research life for the past three months. #MathSky #Science #MATLAB
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American Coalition for Public Radio @goacpr.org · 11/06/2025
🎻 96% of all classical music is heard on public radio. If Congress approves a proposal to strip public radio funding, on-air classical music would virtually cease to exist in the United States. Take action today to #SavePublicRadio and the music you love at goACPR.org
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Noam Ross @noamross.net · 30/04/2025
UPDATE: We have data on >1000 terminated #NSF grants at grant-watch.us. Thanks to all who have been contributing data the past few days. We've also added a "Reports" section with some analyses. For NSF, we see that the STEM education directorate has been absolutely pummeled.
Screenshot of table showing number of grants and total value terminated by NSF directorate. STEM Education directorate is highlighted, with 417 terminations totaling 322 million dollars.

CSV of table:
Directorate,No. Terminated,Total Value
Biological Sciences,46,"$27,960,075"
Computer and Information Science and Engineering,85,"$44,630,113"
Engineering,94,"$33,472,485"
Geosciences,52,"$36,454,740"
Mathematical and Physical Sciences,30,"$6,418,312"
Office of the Director,7,"$4,859,738"
STEM Education,417,"$322,680,063"
"Social, Behavioral and Economic Sciences",266,"$77,635,904"
"Technology, Innovation and Partnerships",46,"$62,231,309"
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David J. Gillcrist @davidjgillcrist.com · 28/04/2025
Then they came for the Jews And I did not speak out Because I was not a Jew Then they came for me And there was no one left To speak out for me" – Martin Niemöller, Lutheran Pastor, Holocaust Survivor (5/5)
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David J. Gillcrist @davidjgillcrist.com · 28/04/2025
with it. "First they came for the Communists And I did not speak out Because I was not a Communist Then they came for the Socialists And I did not speak out Because I was not a Socialist Then they came for the trade unionists And I did not speak out Because I was not a trade unionist (4/5)
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David J. Gillcrist @davidjgillcrist.com · 28/04/2025
faced the utmost scrutiny of the people that elected them. Call your local, state, and federal representatives and put all the pressure you can muster on them to stand against the zealous grab of power we're witnessing . People that do not live with virtue should never be expected to govern… (3/5)
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David J. Gillcrist @davidjgillcrist.com · 28/04/2025
baselessly as the outcome of a mother's choice who was swiftly and forcefully ejected out of this nation is one of the sorriest excuses for a deplorable act of this regime. Governments, regardless of the parties that steer them, are never owed the benefit of the doubt, and should ALWAYS be… (2/5)
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David J. Gillcrist @davidjgillcrist.com · 28/04/2025
There is no singular article that reflects the autocracy—and the rampant violations of the core rights and principles that go along with it—happening right now in the United States. However, stripping children away from a country they have a constitutional right to be in, and justifying it… (1/5)
npr.org
U.S. judge says 2-year-old apparently deported to Honduras 'with no meaningful process'
The toddler, a U.S. citizen, was apparently sent to Honduras with her mother and 11-year-old sister, even as a federal judge tried to contact an attorney representing the government.
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Dana R. Fisher (aka the Apocalyptic Optimist) @fisherdanar.bsky.social · 18/03/2025
The brain drain from the United States begins (as expected): www.rfi.fr/en/france/20...
rfi.fr
French university opens doors to US scientists fleeing Trump’s research cuts
Aix-Marseille University in the south of France says it's ready to welcome American scientists, whose work has become untenable following the Trump administration's cuts in certain academic sectors.…
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David J. Gillcrist @davidjgillcrist.com · 21/02/2025
I internalize posts like this as subtly encouraging us to not dispair and be optimistic about the future. Sometimes a calm meditative moment is enough to promote a proactive attitude for positive change. I for one WILL watch some birds this weekend. 😊 #Science 🌍🌎🌏
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Sam Goldstein @samschuelstein.bsky.social · 14/02/2025
"Get up offa that thing, And shake 'till you feel better, Get up offa that thing, And try to release that pressure!" In other words, JOIN the #standupforscience2025 MOVEMENT! And Happy Valentine's Day to all those cardiovascular scientists out there! 🫀(😘) #AcademicSky 🧪
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Stephen Curry @scurry.bsky.social · 13/02/2025
Thanks to the more than *1100* members of the scientific community who have signed the letter to insist that the Royal Society remains true to values that we all hold dear but that Musk FRS has ridden roughshod over. Please keep signing & sharing. docs.google.com/forms/d/e/1F...
docs.google.com
Open letter to the President of the Royal Society – time to stand up for your values
If you wish to show your support for the letter below regarding apparent inaction by the Royal Society in the face of breaches of its code of conduct by Elon Musk FRS, please sign below. I invite anyo...
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David J. Gillcrist @davidjgillcrist.com · 06/02/2025
got a lingering suspicion that their scores are AI written. There seems to be very little info on their website about them. I'd love to know if there's anyone in #sciart with a better understanding of orchestral music who could weigh in, as I'd prefer to give my attention to actual composers. (2/2)
eternal-eclipse.com
Eternal Eclipse – Eternal Music Group
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David J. Gillcrist @davidjgillcrist.com · 06/02/2025
I think everyone in #sciart agrees that AI generated art is overall bad for the art community, and society by and large. We seem to have a good eye for finding visual AI art, but what about music? I hope I'm not defaming anyone, but after listening to Eternal Eclipse's cinematic music, I've… (1/2)
youtube.com
Eternal Eclipse
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Alt NIH Bluesky 🧪 @altnih4science.bsky.social · 04/02/2025
John Tuthill, a scientist who studies brain control of movement, was banned from NIH today due to Trump directives. He was scheduled to give a seminar about his work. But all visiting seminars have been banned. Exchanging ideas is the lifeblood of science, and this will harm progress. 🧪
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David J. Gillcrist @davidjgillcrist.com · 01/02/2025
What a wonderfully written opinion that I 100% agree with. #scicomm
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
Honestly, in today's age I could also imagine titles being autogenerated by algorithms and picked to maximize traffic. Kinda pointless to try to appeal to the emotions of algorithms 😕
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
I'm glad you pointed this out. I can't be certain that he choice this title. Medium.com *is* a blog hosting site—in contrast to a traditional publication—so I'd conjecture that the writer opted for the title, but I concede that I can't know this to be the case nor did it come to mind when I posted.
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
same notion of exhaustiveness, but doesn't call to question the reader's sense of intellect: "Never understood the Monty Hall problem? Perhaps, you've never had it explained the right way." If we're lucky, he will see this and change to a more inviting title. 🤞 #MathSky #iTeachMath #SciComm #EduSky
csferrie.medium.com
If You Still Don’t Understand the Monty Hall Paradox, You Never Will
You are presented with three doors and know that behind one of the doors is a new car, while the other two reveal a goat. The host of this…
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
potentially something crutial is lost. I try not to judge when I see things like this, I'm sure I've also made mistakes in my communication journey that has discouraged someone at somepoint, but I do try to improve. An alternative title that conveys the… (5/6) #MathSky #iTeachMath #SciComm #EduSky
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
perspective lines, you never will" then I either wouldn't read it at the risk of feeling shamed by someone more skilled, or I would and potentially jeopardize my own drive to improve. Nothing is really gained starting off with an air of cavilingness, but… (4/6) #MathSky #iTeachMath #SciComm #EduSky
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
on a daily basis because we choose careers that require us to do just that. As someone who's never shown any artistic prowess but only now at 30 has decided to learn to draw, if I saw an article that said "If you still don't understand how to draw… (3/6) #MathSky #iTeachMath #SciComm #EduSky #sciart
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
chose such a condescending title. I'd give the benefit of the doubt to him and assume he had no intention of passing judgement on those that might struggle more with mathematical reasoning than people like us that literally engage in mathematical thinking… (2/6) #MathSky #iTeachMath #SciComm #EduSky
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David J. Gillcrist @davidjgillcrist.com · 27/01/2025
I signed up for Medium to read the article because I was curious to know if the tone of the piece matched the title. The article was actually quite nice and gave a diversity of explanations for the problem. Nevertheless, it's unfortunate that the writer… (1/6) #MathSky #iTeachMath #SciComm #EduSky
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Bríd Nic Annaidh ☘️ @bridgetmcgann.medsky.social · 26/01/2025
Omg #SciComm and #LongCOVID fam! Dianna Cowern/PhysicsGirl stood up for the first time in TWO YEARS! I’m so happy for her!! youtube.com/shorts/2ntx9...
youtube.com
Dianna stands for the first time in 2 years!
YouTube video by Physics Girl
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David J. Gillcrist @davidjgillcrist.com · 25/01/2025
I know @miniminuteman.bsky.social does a lot of conspiracy theory debunking, but I've got one that's irrefutable. Milo is actually the fictional character Casey Jones played by Elias Koteas brought to reality by ancient alien-druid magic. #conspiracytheory
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David J. Gillcrist @davidjgillcrist.com · 25/01/2025
media.tenor.com
mr. simpson from the simpsons is sitting at a table with his hands folded and says excellent !
ALT: mr. simpson from the simpsons is sitting at a table with his hands folded and says excellent !
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Randall Munroe @xkcd.com · 24/01/2025
T. Rex Evolution xkcd.com/3042
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David J. Gillcrist @davidjgillcrist.com · 23/01/2025
other life; instead we elect those who lead with compassion, humility, and a will that instills unity and trust in each other. This needs to be our path forward and will be a consequence of how we engage with each other over the next 4 years (20/20) #science #scicomm #climatescience #climatepolitics
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David J. Gillcrist @davidjgillcrist.com · 23/01/2025
you're communicating. When we dedicate ourselves to this philosophy we impel hope into a future where people vote out those who would fear monger and manipulate, subjugate and oppress, or desecrate a planet that is cohabited by humans and all (19/N) #science #scicomm #climatescience #climatepolitics
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David J. Gillcrist @davidjgillcrist.com · 23/01/2025
magnify their obstinance by us leaving them alone. While difficult to accept, many people who did vote for Trump do not necessarily fit this description, and thus have the capacity of being persuaded, subsequently understanding the science… (18/N) #science #scicomm #climatescience #climatepolitics
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David J. Gillcrist @davidjgillcrist.com · 23/01/2025
then and there, focusing our efforts on those with an actual capacity to trust us. So, we should be genuinely engaging with all people showing apparent skepticism, but simply deprive those weaponizing their denial of the opportunity to… (17/N) #science #scicomm #climatescience #climatepolitics
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