- A Bitcoin Stack Exchange post was shared that details how to manually compute a Bitcoin public key from a private key using only paper, pencil, and volvelle-style lookup tables, prompting discussion about whether a small mechanical Babbage-like paper device would be more practical than spinning wheels for by-hand elliptic-curve arithmetic.

- Participants debated the replication prospects of the room-temperature superconductor LK-99, with one side asserting that “works” is a binary property (either it superconducts or it doesn’t) while the other argued that a continuous parameter space of material properties determines real-world utility, illustrating a broader tension between categorical and gradient thinking in evaluating scientific claims.

- A live, open Jitsi meeting was announced under the title “Lead Copper Apatite” where a participant was actively electroplating lead onto copper-coated stainless steel, apparently as part of an informal attempt to reproduce or test aspects of the LK-99 synthesis.

- Discussion turned to long-term cryopreservation of human gametes, including back-of-the-envelope calculations of radiation damage from internal ⁴⁰K and ¹⁴C decay; estimates ranged from ~5 000 to 80 000 years before a 1 Gy dose accumulates, suggesting that intrinsic radioactivity is unlikely to be the limiting factor for current decades-long storage protocols.

- The Gilia Project’s sperm-donor criteria—Education, Proficiency, Height, and Appearance—were criticized as poorly defined and ethically questionable, leading to a broader debate about whether selecting embryos for desired traits inherently compromises offspring autonomy or dignity, and whether public funding of “excellent” donor gametes would be socially acceptable.

- A BBC video about a woman receiving a myoelectric AI-controlled bionic arm after a subway accident was shared; commentary noted that while the control method (re-innervated muscle signals) is not new, the device still produces audible robotic sounds, highlighting the slow pace of practical prosthetic advancement.

- Frustration with regulatory and bureaucratic barriers to human biology research led one participant to claim that pre-war Ukraine was the only jurisdiction where “you could throw money at human biology research and it would actually happen,” explicitly citing Oleksii Arestovych’s stated goal of “bio-freedom,” though others questioned the accuracy and current relevance of this assertion amid the ongoing war.