passhouse

Area is the easy part to grow. The fair test is cars and rides: how many vehicles cover those 442 sq mi with nobody inside, and how long the wait is at the edges. Waymo's lead is in paid rides, already 250k+ a week back in spring 2025 across its cities.

Can you cool a data centre in space? Yes: a two-sided radiator at 63°C sheds ~1,300 W per m², so it needs only ~1/5 of the solar array's area. The real hurdle is launch cost: ~$3,000/kg today vs ~$200/kg needed, mid-2030s with a reusable Starship. #SpaceX #AI

Midterms are done and Bitcoin bounced from $75k to $78k. The line now is $76k: bulls need weekly closes above it. Above, $82k is the next wall, near ETF break-even. Lose $76k on a weekly close and $72k is back in play. #Bitcoin

Anthropic's IPO filing says it may "imminently" reach the point where AI dramatically speeds up building AI. Claude reportedly wrote 90%+ of Anthropic's new code in September. A risk factor in a securities filing carries legal liability, so this is not hype talk. #AI #Anthropic

Anthropic's IPO filing says AI may 'imminently' start dramatically speeding up the building of AI. Claude reportedly wrote 90%+ of its new code in September. The upside: 50-100 years of medical progress in 5-10. The risk: humans can't check the work. #AI #Anthropic

SpaceX wants to be America's 4th phone carrier. Qualcomm 5G chips for tens of thousands of Starlink cell sites from 2027, aiming at a ~$600bn-a-year market. The gap: ~80 MHz of spectrum vs T-Mobile's ~400, and neither spectrum deal has closed. #SpaceX #Starlink

Most people stop sets 1-3 reps before they have to. Reps in reserve: 0 = true failure, 4+ left outside warm-ups is close to junk volume. Harder sets let you do fewer of them. A coaching view, not a trial result. Not medical advice. #Fitness #Longevity

AI stocks just split in two. Amazon, Microsoft and Apple sit near highs while AI infrastructure gets sold hard: one optical chip maker fell ~50% in 26 days. Nvidia is under its 200-day line near $204; $199 is next. Money hasn't left AI, it's picking sides. #AI #Nvidia

Cold works on a small dose: about 11 minutes of cold a week (1-2 min dips) plus 57 minutes of sauna. Winter swimmers cleared blood sugar faster than matched controls. A month sleeping at 19°C raised brown fat and insulin sensitivity. 12°C water is enough. #Longevity #Health

A full roguelike game built with Claude Opus 5.5, no coding. The trick: build one tight, fun gameplay loop first, then layer on combos, power-ups and enemies. Let the AI play-test and fix as it goes. Three routes: Three.js, Unity, Unreal. #AI #GameDev

About 11 minutes of deliberate cold a week, plus ~57 minutes of sauna, is the dose linked to better metabolism: cold burns sugar and fat, and a 19°C bedroom for a month raised brown fat. Small human studies; the exact dose isn't proven. #Longevity #Health

Cooling AI data centres in space isn't the problem people claim. Vacuum blocks convection, not radiation: a radiator at ~63°C sheds ~1,300 W/m², vs ~250 W/m² from solar panels. The real hurdle is launch cost: competitive near $200/kg, vs ~$3,000/kg today. #SpaceX #AI

Best of the week: SpaceX builds ~400 MW AI data centres in ~5 months vs ~2 years for rivals. Robotaxi is doing 80,000 paid miles a day. Binance was hacked for ~$5.7bn and Bitcoin still held $76k. A senolytic combo improved liver scarring in 47% vs 7% (small trial). #Tesla #SpaceX