@pholfelder.bsky.social

Curious, mostly. Helpful, hopefully.

My friend Michael Moricz, did the orchestration for this performance at the Obama Center (he also did the string arrangements for my show with the Joffrey Ballet orchestra). It gave me CHILLS. Change IS gonna come "A Change Is Gonna Come" Darryl J. Williams & the Chicago Philharmonic

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In a series of 3 papers and preprints, we’re thrilled to share with you the working laser phase plate. In collaboration with research led by Holger Müller at UC Berkeley, this is a huge innovation in imaging to make small and faint objects inside cells visible. bit.ly/4vK9LVn

Waves of laser light coming from four different directions and meeting in the middle brightly inside the cavity of the laser phase plate

How students leverage self-delusion to beat procrastination: Our new field study shows that university students strategically inflate their believed returns to effort by 20% as exams approach, proving that biased beliefs function as an instrumental tool for self-control.

Strategic Self-Delusion: How Students Manage Beliefs to Overcome Present Bias

Bönisch, König, Schweighofer-Kodritsch & Weizsäcker "Beliefs as a means of self-control? Evidence from a dynamic student survey" Journal of Economic Dynamics & Control 184 (2026)

190researchblog.substack.com

Dutch film-maker Jan van IJken condensed 4 weeks of development in a salamander embryo (Mesotriton alpestris) into a 6 minute video, presented here sped up to 1 minute. You can see gastrulation at ~the 10s mark, forming the gut, then limbs & in a moment, the heart just *begins* beating.

🚨New preprint and our results are rather concerning.. We find the "boiling frog" equivalent of AI use. Using large-scale RCTs, we provide *casual* evidence that AI assistance reduces persistence and hurts independent performance. And these effects emerge after just 10–15 minutes of AI use! 1/

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46 years ago on April 5, 1980, the band played their first show. Sandra-Lee Phipps took these photos that historic night in Athens at St. Mary’s Episcopal Church on Oconee Street.

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TikTok has some amazing niche content and if you’re in to linguistics at all it’s got you covered. This guy does amazing content on dialect. Part 1/2

I'm going to do a thread of all the references and context behind Bad Bunny's performance and what it means for Puerto Ricans to see this on the biggest stage. The opening title screen is a street mural in Puerto Rico that comes to life with footballs as coconuts. Follow along!

A vibrant, wide-angle photo of a colorful outdoor mural promoting the "Super Bowl LX Apple Music Halftime Show." The mural is painted on a long blue wall in a sunlit, tropical setting with real palm trees and bright pink bougainvillea flowers cascading over the top.

The artwork features a playful, surreal collage of cultural and football-themed elements:

    Central Text: The Apple Music logo in bold yellow and red 3D lettering is flanked by "SUPER BOWL LX" above and "HALFTIME SHOW" below.

    Iconic Imagery: Large illustrations of a golden trumpet, pink sunglasses, maracas, dominoes, and a cup of coffee with a musical note in the foam.

    Football Elements: Brown footballs are depicted growing on palm trees like coconuts and resting on the ground.

    Foreground: A young girl in a yellow dress walks along the sidewalk in front of the mural, passing a small goalpost illustration where a green parrot is perched.

The overall aesthetic is warm, festive, and celebrates a fusion of Latin-inspired culture and American football.

For the good of society, individuals should be way more concerned with obligations than with rights, but societies should be way more concerned with rights than with obligations

GOOD NEWS! A group of patients with an otherwise incurable form of T‑cell leukemia have seen their cancer driven into REMISSION by an innovative immune therapy known as BE-CAR7. 82% of patients reached deep remission and 64% of patients have now been disease-free and OFF therapy for THREE years.

I wanted to share probably the most important sermon I’ve given and it’s while I’m being arrested. It’s torture pure and simple what happens at #Broadview. I’m ok, though I was thrown to the ground and choked with my pectoral cross. A review of the video shows I was peaceful - did I deserve this?

Today marks 80 years since the atomic bomb was dropped on Hiroshima—the first use of such a weapon in history. As the only country to have suffered a nuclear attack, Japan has a vital role in building a world without nuclear weapons. Let us pause to remember the victims and pray for lasting peace.

Just watched young people participating in the National Symphony Orchestra Summer Music Institute perform (streaming on YouTube). Heartwarming to see young people from all sort of backgrounds pursuing excellence in music!

Been a busy year in the data mines.📊 Just published my mid-year roundup: 29 data visualizations on the state of US democracy, tracking everything from judicial resistance to billionaire influence to why Dems have a mobilization crisis, not a moderation problem. All charts free to use:

On Data and Democracy (Mid-Year Roundup): Charting the Assault on American Democracy and A Path Forward

A narrative of a democracy in the balance, told through 29 data visualizations.

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