/ˈbɑːltəkʊteɪ/. Knows some chemistry and piping stuff. TeXmacs user.

Website: reboil.com

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Joined 1 year ago
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Cake day: June 12th, 2023

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  • Elves can live over a thousand years (one dark elf we know of is blessed by their evil deity and is over 5,000), but dwarves only about 2-400 years (I think?) and half lings about 100-150ish, humans standard 80.

    After reading The Age of Em (2016) by Robin Hanson, I wish there were stories about races that went the other way, lifespan-wise: extremely small people who lived only 1 year, even smaller people who lived only 1 month, some very extremely small but very powerful ones that lived only a day, etc. The idea is that artificial people (emulated people, or Ems) could have subjectively similar characteristics and experiences to the larger physical entities (e.g. humans, but perhaps even dwarves, elves, and etc., since theyʼre just emulated minds), but their artificial emulated substrate allows their minds to develop and age orders of magnitude faster; they also could solve certain problems orders of magnitude faster but practical limitations on delays between thought and physical interactions (your mind would waste away if you had to wait a whole subjective hour between each physical step during a walk with a standard 1.5 meter body) require their bodies to be very small.

    To ems that are smaller and faster, sunlight seems dimmer and shows more noticeable diffraction patterns. Magnets, waveguides, and electrostatic motors are less useful. Surface tension makes it harder to escape from water. Friction is more often an obstacle, lubrication is harder to achieve, and random thermal disruptions to the speed of objects become more noticeable. It becomes easier to dissipate excess body heat, but harder to insulate against nearby heat or cold (Haldane 1926; Drexler 1992).

    A crude calculation using a simple conservative nano-computer design suggests that a matching faster-em brain might plausibly fit inside an android body 256 times smaller and faster than an ordinary human body (Hanson 1995).

    Compared with ordinary humans, to a fast em with a small body the Earth seems much larger, and takes much longer to travel around. To a kilo-em, for example, the Earth’s surface area seems a million times larger, a subway ride that takes 15 minutes in real time takes 10 subjective days, an 8-hour plane ride takes a subjective year, and a 1-month flight to Mars takes a subjective century. Sending a radio signal to the planet Saturn and back takes a subjective 4 months. Even super-sonic missiles seem slow. However, over modest distances lasers and directed energy weapons continue to seem very fast to a kilo-em.

    Call them speedlings, or some variant of sprite, but I think its an interesting world-building concept.






  • Imagine if a lost Spanish armada finally arrived at Florida, centuries late, musket-wielding conquistadors raiding a coastal naval academy while a prominent political VIP was giving a speech, taking them hostage like Hernán Cortés did with Moctezuma II (Aztec Empire) or Francisco Pizarro with Atahualpa (Inca Empire).


  • I think it involved a planet called …

    spoiler

    … Sky’s Edge, if I recall correctly. Except the “new tech” was not FTL (not a thing in Revelation Space canon) but the practice of ejecting a significant fraction of hibernating colonists and their supplies to buff their deceleration ability in order to hold higher interstellar velocity for longer so as to get a few years “edge” in lead time over other generation ships. All to enable the traitorous ship of the generation ship fleet to raid planetary resources sooner to build up military forces to raid the slower latecomers.


  • In fact, electric vehicles have been common once before. In the early years of the twentieth century, there were three fundamentally different automobile technologies battling for supremacy, and electric cars held their own against competition from steam-and gasoline-powered alternatives, as they are mechanically much simpler and more reliable, as well as quiet and smokeless. In Chicago they even dominated the automobile market. At the peak of production of electric vehicles in 1912, 30,000 glided silently along the streets of the USA, and another 4,000 throughout Europe; in 1918 a fifth of Berlin’s motor taxis were electric.

    The drawback of electric cars with their own onboard batteries (rather than trains or trolleys taking a continuous feed from a power line over the track) is that even a large, heavy set cannot store a great deal of energy, and once depleted the battery takes a long time to recharge. The maximum range of these early electric vehicles was around a hundred miles, (Ironically, about 100 miles is still the maximum range for modern electric cars: technological improvements in battery storage and electric motors have been perfectly offset by an increase in car size and weight, and drivers of electric vehicles suffer from “charge anxiety.”) but this is farther than a horse and in an urban setting is more than adequate. The solution is, rather than waiting for the battery to be recharged, you can simply pull into a station for a quick battery pack exchange: Manhattan successfully operated a fleet of electric cabs in 1900, with a central station that rapidly swapped depleted batteries for a fresh tray.

    From The Knowledge (2014) by Lewis Dartnell, chapter 9 “Transport”. Cited works for the history of electric cars are:








  • and then ends it, always leaving you wanting more

    After several years of reading, I have realized that most of his books fall into the “Status Quo” genre, much like Marvel movies in which superheroes are cops that work to prevent relatable characters or governments from falling too out of sync with reality. The second their dystopian speculations start to imagine a society better off (due to redistribution of concentrated power or wealth), they immediately end.

    Diamond Age (1994): corporations control society by controlling the centralized Feeds that supply matter compilers, justifying their monopoly by saying they keep society stable. MC publishes blueprints for compiling your own Feed. Story ends.

    Anathem (2008): The government executes most scientists en masse and imprisons most survivors because technology was too disruptive 3000 years ago. A new global disaster forces the release of the scientists so they can wield ancient technology to solve the crisis. Story ends.

    Cryptonomicon (1999) / The Great Simoleon Caper (1994): Some cryptographers think Bitcoin is a good idea even if it might topple governments. They publish it. Story ends.

    Termination Shock (2021): Climate change can be solved by billionaires by getting governments addicted to shooting sulfur into the atmosphere. The story ends basically as soon as the operation begins.

    Seveneves (2015): The moon blows up, forcing a crash course construction of a modern Noah’s Ark in the form of a fleet of spaceships in low Earth orbit. Eccentric billionaires sacrifice themselves to make the project work to save seven genius women who rebuild society with eugenics and a racial caste system. They discover some pre-disaster survivors whose culture is incompatible with the new society. Talks begin for reïntegration. Story ends.

    Fall (2019): People upload and emulate their brains into datacenter computers. The first rich people to upload themselves gain an enormous first mover advantage in the digital afterlife and control the minds of newcomers whose surviving families pay ludicrous amounts of money to keep the dead billionaire-controlled Bitworld running. The system keeps running smoothly until the admin with the credentials to shut everything down dies, is uploaded, defeats the incumbent dead billionaire, thus making the world more equitable. Story ends.

    The closest thing to an exception I can find is Atmosphæra Incognita (2014; part of Hieroglyph: Stories and Visions for a Better Future), in which a billionaire fights environmental regulations and NIMBY pushback to build a 20-kilometer steel tower to reduce space launch costs by acting as scaffolding for a mass driver. Although the story portrays most people as against the construction of such an audacious structure, and although the main beneficiaries are corporations wealthy enough to purchase space on the tower to install equipment, if you weigh your definition of “society” towards billionaires and their company org charts, then the story is about breaking the Status Quo (of NIMBY California landowners).




  • The Aranet4 runs on two AA batteries and the smartphone apps are still well-supported. The apps also support CSV export of trend data which is nice. In addition to CO2 ppm, it also records temperature, air pressure, and relative humidity (these other readings are probably used to adjust the CO2 sensor readings to account for temperature/humidity/air pressure conditions). I carry one of these with me while traveling and its high alarm beep (I have it set to sample every 60 seconds) is a convenient reminder to circulate air or consider wearing a mask if I am in a public space. The air pressure reading can be used as a crude altimeter, especially if you have two of the devices: one in a stationary location and another on your person as you take a hike; subtract the two values and you get a pressure difference that is a function of elevation.