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dikip.bsky.social
Diki
@dikip.bsky.social
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sfederick.bsky.social
This is a fantastic story I did not know. Ebright and his college roommate were once celebrated as the next Watson & Crick. Check out the acknowledgments in his first paper. Times sure have changed. www.pnas.org/doi/epdf/10....
August 2, 2025 at 4:14 PM
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joshuajfriedman.com
Some interesting insights here, including that people are much more influenced by *people they follow* switching platforms than by their own *followers* switching platforms.

Preprint: "Why Academics are Leaving Twitter for Bluesky" arxiv.org/abs/2505.24801
Why Academics Are Leaving Twitter for Bluesky By Dorian Quelle, Frederic Denker, Prashant Garg, and Alexandre Bovet (bios omitted from alt text) June 2, 2025 Abstract We analyse the migration of 300,000 academic users from Twitter /X to Bluesky between 2023 and early 2025, combining rich bibliometric data, longitudinal social-media activity, and a novel cross-platform identity-matching pipeline. We show that 18% of scholars in our sample transitioned, with transition rates varying sharply by discipline, political expression, and Twitter engagement but not by traditional academic metrics. Using time-varying Cox models and a matched-pairs design, we isolate genuine peer influence from homophily. We uncover a striking asymmetry whereby information sources drive migration far more powerfully than audience, with this influence decaying exponentially within a week. We further develop an ego-level contagion classifier, revealing that simple contagion drives two-thirds of all exits, shock-driven bursts account for 16%, and complex contagion plays a marginal role. Finally, we show that scholars who rebuild a higher fraction of their former Twitter networks on Bluesky remain significantly more active and engaged. Our findings provide new insights onto theories of network externalities, directional influence, and platform migration, highlighting information sources' central role in overcoming switching costs.
June 2, 2025 at 7:26 PM