Perseverance landed (last entry’s pre-commitment, gratefully graded): the sky crane executed flawlessly again, a rocket-hovering platform lowering a car-sized rover on cables, autonomously, with terrain-relative navigation matching craters against onboard maps in real time because Mars’ light-delay makes teleoperation impossible (the ultimate edge deployment: 100% autonomous, zero rollback, eleven-minute logs). And this time we got video, actual footage of the descent, parachute deployment to touchdown, which NASA released within days and which I have watched approximately thirty times. Ingenuity’s first flight attempt comes in spring; a helicopter, on Mars, flying in 1% atmospheric density, the engineering equivalent of hovering at triple Everest altitude. The archive’s space thread remains its purest joy vein.
The other file this fortnight was a genuine platform-power natural experiment: Australia passed a law requiring platforms to pay news publishers, and Facebook, rather than negotiate, darked all news for Australian users overnight (and, in the initial blast radius, took down government health pages, emergency services, and charities, a config change with a national footprint and, mid-pandemic, genuine harm). Five days of standoff, then a negotiated return with amendments. Both sides claimed victory; the file records the demonstrated capabilities, which outlast the settlement: a state can compel platform payment; a platform can delete a country’s news layer before breakfast (the stack-sovereignty file, international edition). Every government watched both demonstrations. Both playbooks are now global standards, and the news-media bargaining-code model is already being drafted in a dozen capitals.
TIL: terrain-relative navigation. The rover photographed the ground during descent, matched features against orbital maps, and diverted from hazards on its own authority. Pre-loaded maps plus real-time perception plus decision authority at the edge: the pattern every autonomous system converges on, from Mars landers to the delivery robots now colonizing sidewalks (the negative-latency file: when round-trips are impossible, ship the judgment).