Convergence

Game-design time:

With Human Revolution, DeMarle and the narrative team had a bit of breathing room because the game was set so far before the original Deus Ex. There was time and space to build something totally new within the existing universe. But with Mankind Divided, and any other sequels that may follow, that space is shrinking. “With the sequel, we now have to stay true to what we were building,” she says, “but we also have to be aware that we’re getting closer and closer to the established future.”

Underlinings (#27)

Peter Galison on Einstein and Poincaré (from Einstein’s Clocks, Poincaré’s Maps: Empires of Time, 2003):

Yet despite their differences, both were grappling with the same extraordinary insight into electrocoordinated time, and in so doing both men stood at the crossing of two great movements. On one side lay the vast modern technological infrastructure of trains, shipping, and telegraphs that joined under the signs of clocks and maps. On the other, a new sense of the mission of knowledge was emerging, one that would define time by pragmatism and conventionality, not by eternal truths and theological sanction. Technological time, metaphysical time, and philosophical time crossed in Einstein’s and Poincaré’s electrically synchronized clocks. Time coordination stood, unequaled, at that intersection: the modern junction of knowledge and power.

(Tracking this techno-cultural lineage forward into Bitcoin is illuminating.)

Underlinings (#26)

Tegmark:

If we discover the ultimate nature of time, this will answer many of the most exciting open questions facing physics today. Did time have some sort of beginning before our Big Bang? Will it ultimately end? Did it emerge out of some sort of timeless quantum fuzz into which it will eventually dissolve? We physicists haven’t found the mathematical theory of quantum gravity required to convincingly answer these questions, but whatever this “theory of everything” turns out to be, time will be the key to unlocking its mysteries.

Retrocausality

A sensible introduction. A snippet:

The assumption of effects running back in time is not only consistent with the experimental results, but also simplifies the physical description of electron-photon interactions. … Feynman posed however the question if effects running back in time could also be a possible mode of interaction. He thought specifically about incoming, so-called “advanced” waves, that converge simultaneously from all sides ending up as if by magic in the center. They represent the time-reversed version of the outgoing, so-called “retarded” waves, that we know from our everyday experience, for example in the form of radio or water waves. He found out that the effects of advanced and retarded waves compensate each other so that the overall effect corresponds exactly to the observable phenomenons [sic]. More precisely, Feynman’s analysis revealed that they compensate each other almost completely. The difference results in an increased resistance opposing the electron acceleration that is actually measurable. There is no convincing alternative explanation for this increased resistance to the present day.

Some compressed background discussion and references here.