Joshua B. Plotkin's Avatar

Joshua B. Plotkin

@jplotkin.bsky.social

Annenberg Professor of Natural Sciences, University of Pennsylvania http://evolution.sas.upenn.edu/

2,213 Followers  |  794 Following  |  91 Posts  |  Joined: 19.08.2023  |  1.572

Latest posts by jplotkin.bsky.social on Bluesky

Just below that, 13

01.02.2026 20:49 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Yeah. What floor?

01.02.2026 19:52 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Shibuya

01.02.2026 19:28 โ€” ๐Ÿ‘ 8    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Women in Evolutionary Biology II Women in Evolutionary Biology is an event to promote diversity and equality in the field. For this purpose, we invited 6 outstanding women as keynote speakers, offering a unique opportunity to learn from their experiences and celebrate their achievements. While all keynote speakers are women, scientists of all genders and backgrounds in evolutionary biology are welcome to participate in scientific presentations and discussion sessions on topics relevant for women in science. The workshopโ€™s...

Join the Women in Evolutionary Biology II workshop from June 1-3, 2026, at the Max Planck Institute in Plรถn, Germany. Open to all genders. More info: https://workshops.evolbio.mpg.de/event/144/overview. Registration closes on Feb 20, 2026. #workshop

01.02.2026 09:07 โ€” ๐Ÿ‘ 13    ๐Ÿ” 8    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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Canโ€™t even

29.01.2026 10:53 โ€” ๐Ÿ‘ 12    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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Miharashi, Niseko

21.01.2026 22:21 โ€” ๐Ÿ‘ 6    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Breakfast with Yotei-san

18.01.2026 23:54 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Michishirube ้“ใ—ใ‚‹ใน #Kabuchiko

16.01.2026 23:41 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Here are some nice streetcars. #TodenLine #Tokyo

15.01.2026 22:56 โ€” ๐Ÿ‘ 9    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Here are some nice trains. #Nippori #Tokyo

15.01.2026 22:41 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Evolutionary game theory researches: Join us for the โ€˜Evolutionary Games: Mathematical Theory and Biological Insightsโ€™ workshop at NITMB!

Travel applications are due Wednesday, March 11th - www.nitmb.org/evolutionary...

15.01.2026 20:30 โ€” ๐Ÿ‘ 11    ๐Ÿ” 7    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Photographic vibes, Colombia

29.12.2025 23:19 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Postdoctoral Researcher in Theoretical Evolutionary Biology Postdoctoral Researcher in Theoretical Evolutionary Biology

๐Ÿ“ข I'm hiring! 3-year postdoc in theoretical evolutionary ecology at University of Helsinki ๐Ÿ‡ซ๐Ÿ‡ฎ Apply: jobs.helsinki.fi/job/Helsinki-Postdoctoral-Researcher-in-Theoretical-Evolutionary-Biology/1348955157/
#AcademicJobs #Postdoc #EvolutionaryEcology #TheoreticalEcology #ScienceJobs #AcademicChatter

29.12.2025 11:43 โ€” ๐Ÿ‘ 58    ๐Ÿ” 65    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 2
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Cartagena

26.12.2025 18:44 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Coffee region, Colombia

26.12.2025 18:34 โ€” ๐Ÿ‘ 7    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Bazurto market, Cartagena

24.12.2025 17:00 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

If you are interested in this work and are looking for a postdoc position, please get in touch -- we are actively looking for someone to join our group at UCLA!

17.12.2025 18:53 โ€” ๐Ÿ‘ 14    ๐Ÿ” 8    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Intracellular interactions shape antiviral resistance outcomes in poliovirus via eco-evolutionary feedback - Nature Ecology & Evolution A model of intrahost poliovirus replication shows that, after several rounds of replication, pocapavir, a poliovirus capsid inhibitor, collapses viral density, preventing intracellular interactions th...

Very cool work.

Intracellular interactions shape antiviral resistance outcomes in poliovirus via eco-evolutionary feedback

www.nature.com/articles/s41...

10.12.2025 21:55 โ€” ๐Ÿ‘ 9    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Strong endorse.

10.12.2025 04:07 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
04.12.2025 21:18 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Hi everyone! I'm co-organizing this retreat/workshop June 15-19 for those looking to get started in mathematical/computational modeling of biological processes. Location is a beautiful farm in NC. Please share with students and others who want to build modeling skills. Interdisciplinarity welcome!

02.12.2025 19:00 โ€” ๐Ÿ‘ 46    ๐Ÿ” 26    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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#gobirds

28.11.2025 19:38 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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As a former physics undergraduate, giving a colloquium in a physics department feels like a very full-circle moment โ˜บ๏ธ

24.11.2025 01:54 โ€” ๐Ÿ‘ 11    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Steve Bannon casually texting with Jeffrey Epstein about meetups in Paris, oh and about Jared, Ivanka and so much more.

13.11.2025 05:13 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Grep game very strong tonight.

13.11.2025 04:55 โ€” ๐Ÿ‘ 12    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
6 points of fuckno to Trump across all counties

6 points of fuckno to Trump across all counties

05.11.2025 02:07 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Language Models are Injective and Hence Invertible Transformer components such as non-linear activations and normalization are inherently non-injective, suggesting that different inputs could map to the same output and prevent exact recovery of the in...

I did not expect that: Large Language Models are invertible:

arxiv.org/abs/2510.15511

01.11.2025 03:27 โ€” ๐Ÿ‘ 75    ๐Ÿ” 16    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 13
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Philly Halloween

31.10.2025 22:50 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Agent-based models move into the economic mainstream In the 1980s and โ€™90s, SFI played laboratory to a promising new method known as agent-based modeling. In ensuing decades, agent-based models (ABMs) proliferated across many fields, including economics...

What if one model could realistically predict the economy of an entire country? The entire world? A month-long working group, co-organized by SFI External Professor @doynefarmer.bsky.social, made the case that agent-based models may bring this vision to life:

28.10.2025 17:47 โ€” ๐Ÿ‘ 30    ๐Ÿ” 9    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 2
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456: Kaleda Denton | Following the Majority - How Conformity Shapes Culture and AI In this episode of the Armen Show, Armen Shirvanian interviews Dr. Kaleda Denton, a post-doctoral fellow at the Santa Fe Institute. They discuss the interdisciplinary nature of the Institute, the concept of niche construction in biology, and the dynamics of decision-making, particularly the differences between following the mean versus the majority. The conversation also explores the limitations of game theory, the role of cultural evolution in cooperation, and the impact of AI on accessibility and learning. They delve into the importance of reducing polarization while maintaining diversity in viewpoints, emphasizing the need for mixing and collaboration across different fields and perspectives. In this engaging conversation, Dr. Kaleda Denton and Armen Shirvanian explore a variety of topics including the distinction between majority and mean opinions, the challenges of reading in the digital age, and the implications of large language models (LLMs) on culture. They discuss the importance of communication in society, the influence of close circles versus wider communities in learning, and the role of influential figures in personal development. The conversation also delves into the concept of memes and cultural transmission, the impact of role models on cumulative culture, and the question of human uniqueness in the context of cultural evolution. Check out Kaleda's website at https://www.kaledadenton.com/ 00:00 Introduction to the Podcast and Guest 03:01 The Santa Fe Institute: A Unique Interdisciplinary Environment 05:56 Niche Construction and Extended Evolutionary Synthesis 08:56 Mean vs. Majority: Insights from Research 12:08 Game Theory and Its Limitations 15:03 Cultural Evolution and Cooperation 17:59 The Role of AI in Learning and Accessibility 20:54 Conformity Across Species and LLMs 23:59 The Importance of Current Information 27:03 Final Thoughts on AI and Human Interaction 36:57 The Quirks of AI Hallucinations 38:53 The Evolution of Language Models 39:35 Agency and Individuality in AI Interactions 41:41 The Flattening of Ideas and Language 43:42 Cognitive Offloading and Its Consequences 45:04 Reducing Polarization Through Interaction 48:39 The Importance of Mixing Perspectives 50:02 The Dangers of Majority Influence 53:51 Understanding Mean vs. Majority Opinions 01:04:32 Risks and Opportunities in Cultural Evolution 01:10:02 The Impact of Headlines on News Consumption 01:11:46 The Need for Positive News 01:15:04 Learning from Close Circles vs. Wider Communities 01:17:23 Influential Figures in Personal Development 01:18:44 The Evolution of Human Uniqueness 01:22:38 Understanding Memes and Cultural Transmission 01:23:10 The Multiplicative Costs of Altruism 01:36:09 The Role of Role Models in Cumulative Culture

Honoured to have done my first ever podcast on The Armen Show! Besides science, math, & academia, we talked about:

-LLMs hyping up bad ideas
-My 5 foster cats, but whether I'm secretly a dog person
-How it would be nice to "skip" & "mute" people in real life ๐Ÿ˜›

Check it out! ๐Ÿ˜„

tinyurl.com/yc4hjz2x

23.10.2025 20:58 โ€” ๐Ÿ‘ 7    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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