# Key Points from #hplusroadmap IRC Discussions

• A debate on self-driving car ethics explored whether autonomous vehicles should prioritize passenger safety or make utilitarian decisions about which lives to save in unavoidable accidents, highlighting the ethical complexities in AI decision-making systems.

• Neuroscientists published an open letter warning DIY brain hackers about dangers of transcranial direct current stimulation (tDCS), with particular concern about amateur administration to children, while research showed the commercial tDCS headset "foc.us" actually impaired working memory rather than enhancing it.

• Medical tourism was discussed as a potential cost-saving approach, with dental CT scans (CBCT) costing approximately $60 in Eastern Europe compared to $700 in the US, though participants noted travel expenses might offset these savings.

• Participants shared DIY biohacking implementations, including a homemade vestibular stimulation system using ESP8266 microcontroller, L293 driver, and LM334 current source, demonstrating the community's practical approach to experimental technology.

• A Hackaday article on creating transparent wood sparked discussion about potential microfluidic applications and access to chemical precursors like hydrogen peroxide, reflecting the community's interest in novel materials for biotechnology applications.

• The discussion touched on the proactionary principle in transhumanism, noting its decreased prominence in current transhumanist discourse despite the continued activity of its proponents Max More (now Alcor CEO) and Natasha Vita-More.

• Concerns were raised about how current dental procedures might preclude future stem cell therapies, with speculation that research into regrowing multiple sets of teeth could eventually provide solutions, highlighting the tension between current medical practices and anticipated future technologies.