- A Reddit thread on “de-aging all the way back to a child” sparked debate about the ethical limits of radical life-extension and whether extreme rejuvenation should even be contemplated in longevity-advocacy thought experiments.  
- Lev presented back-of-the-envelope calculations suggesting that human-level technological civilizations would broadcast signals ~10¹⁵ times weaker than the cosmic microwave background, making SETI detection extraordinarily unlikely.  
- Discussion highlighted that modern terrestrial communication is shifting to encryption, spread-spectrum, and highly directional beam-forming, all of which reduce unintentional leakage and further diminish the odds of intercepting alien transmissions.  
- Alonzoc and docl noted that a Dyson-sphere civilization could deliberately “point-cast” across interstellar distances using stellar-scale power, but even then intervening dust and cosmic structure (“great walls”) would attenuate or obscure the signal.  
- docl linked recent popular coverage (CNN, 13 Jun 2024) and the peer-reviewed Project Hephaistos paper (MNRAS 531:695, 2024) that claims seven mid-infrared sources consistent with potential Dyson-sphere candidates, while stressing the need for skepticism.