frobischer
frobischer t1_j8iwpfv wrote
Reply to What if AI companies are using our prompts to create low-resolution models of our entire identities? by roiseeker
I ran a modern roleplaying campaign years ago based on the emergence of man-machine interface and real-time neural access to phone apps and communications. This was one of the outgrowths, that came to be called Shadows, as they were a marketing-scheme that evolved into personality backups. In fact the systems started creating Shadows of long-gone people for historical preservation purposes. A futuristic ghost story.
frobischer t1_j8ivt1v wrote
Here's the abstract from the original paper in Nature Energy:
"The use of vast amounts of high-purity water for hydrogen production may aggravate the shortage of freshwater resources. Seawater is abundant but must be desalinated before use in typical proton exchange membrane (PEM) electrolysers. Here we report direct electrolysis of real seawater that has not been alkalised nor acidified, achieving long-term stability exceeding 100 h at 500 mA cm−2 and similar performance to a typical PEM electrolyser operating in high-purity water. This is achieved by introducing a Lewis acid layer (for example, Cr2O3) on transition metal oxide catalysts to dynamically split water molecules and capture hydroxyl anions. Such in situ generated local alkalinity facilitates the kinetics of both electrode reactions and avoids chloride attack and precipitate formation on the electrodes. A flow-type natural seawater electrolyser with Lewis acid-modified electrodes (Cr2O3–CoOx) exhibits the industrially required current density of 1.0 A cm−2 at 1.87 V and 60 °C."
frobischer t1_jaaxjqk wrote
Reply to Either we're past the great filter, or ASI IS the great filter by Shoddy-Motor
My guess is that the great filter is that our galaxy has been too "hot" until recently. Life has sprung up millions of times, but supernovae, black hole radiation jets and the like have cooked worlds pretty regularly. We're out near the edge of the galaxy, so we're in the more distant and cooler section. We may also have been very lucky. Combine that with the limited speed of light preventing us from noticing many of the traces of intelligent that might be far away and faint.