Not sure about spoofing, but we are posting to a public forum that shows our names and email addresses. The link is at the bottom of every email.
I found a more precise calculation of the lifetime of a black hole. It is 5120 pi m^3 in Planck units. Any primordial black holes created during the Big Bang smaller than the size of a proton, or 500 million tons, would have evaporated by now. https://en.wikipedia.org/wiki/Hawking_radiation The only way we know how to make black holes is to bring together at least 3 solar masses (a solar mass is 2 x 10^30 Kg) so that gravity can overcome nuclear repulsion at the core of a neutron star. A Kardashev level III civilization could extract energy by dropping stars into Sagittarius A*, the black hole at the center of our galaxy, producing a quasar. This is the most efficient way to convert mass into energy. About half of the star's mass is converted and the rest is added to the black hole. Our galaxy has 10^11 stars, yielding 10^58 J. This is 50 times more energy than you could collect with 10^11 Dyson spheres over the lifetimes of the stars. Hydrogen fusion only converts about 1% of mass to energy. Kardashev level IV would convert all the the 10^53 Kg (10^12 galaxies) in the universe to 10^70 J. This would power 10^92 bit operations at the Landauer limit at the CMB temperature of 3 K. Your brain performs 10^25 bit operations over a lifetime. You could upload 10^67 human minds. The biosphere performed 10^48 DNA copy operations and 10^50 amino acid transcription operations on 10^37 bits of DNA over the last 4 billion years. You could search a space of 10^42 planets in a universe 10^18 times as large to optimize evolution. But you still could not simulate the universe at the wave function level to make quantum mechanics deterministic and predict tomorrow's Powerball numbers. The entropy of the universe out to the Hubble radius is 1/4 the surface area in Planck units, or 2.95 x 10^122 bits. -- Matt Mahoney, [email protected] On Thu, Dec 11, 2025, 2:13 AM Quan Tesla <[email protected]> wrote: > Not sure how your response relates to pyramids in general, but I need to > ask: In physics, how would you drop 1 kg of mass into a black hole and > extract the exawatts from it? Moreso, where would you physically get a > black hole from that would permit you to traverse its firewall? > > On Thu, Dec 11, 2025 at 8:33 AM Matt Mahoney <[email protected]> > wrote: > >> It's a simple physics problem. The great pyramid of Giza weighs 5.5M >> tons. 1 kg of mass dropped into a black hole converts to 9 x 10^16 J or >> 21.5 megatons. The lifetime of a black hole is on the order of the mass >> cubed in Planck units. A Planck mass is 22 micrograms. So the pyramid >> weighs 2.5 x 10^17 Planck units and would live about 10^52 units of 5.4 x >> 10^-44 seconds, or about a year. It would convert mass to Hawking radiation >> energy at a rate of 300 kg/s, or 30 exawatts of hard gamma rays. >> >> This is about 300 times the energy received from the sun. Since radiation >> increases with the fourth power of temperature, this would raise the >> Earth's surface temperature from 290 K to 1200 K before it went out with a >> final 100 billion megaton blast. >> >> -- Matt Mahoney, [email protected] >> >> On Thu, Dec 11, 2025, 12:21 AM Quan Tesla <[email protected]> wrote: >> >>> John. I give up. How many and when and where's the physical evidence >>> thereof? It's all speculative. Interesting, but speculative. It may also >>> just have been the temples of the elite, hogging the limelight and social >>> power. Not disimilar to what we observe today. >>> >>> On Thu, Dec 11, 2025 at 6:01 AM John Rose via AGI <[email protected]> >>> wrote: >>> >>>> On Wednesday, December 10, 2025, at 9:55 AM, Quan Tesla wrote: >>>> >>>> Did some reading. aboyt Dyson spheres. Fascinating concept. Thanks for >>>> the headsup. Down to Earth, the following is AI's version of our state of >>>> civilization. Q: If less than 10% of the global population achieves 0.75, >>>> does that mean the whole civilization did? Nope. We're still in the Type >>>> I's infancy. Lots of opportunity to really ramp this up. >>>> >>>> >>>> How many watts did the pyramids put out :) >>>> >>> *Artificial General Intelligence List <https://agi.topicbox.com/latest>* > / AGI / see discussions <https://agi.topicbox.com/groups/agi> + > participants <https://agi.topicbox.com/groups/agi/members> + > delivery options <https://agi.topicbox.com/groups/agi/subscription> > Permalink > <https://agi.topicbox.com/groups/agi/T7ff992c51cca9e36-M4caf93a0fca1146427854bac> > ------------------------------------------ Artificial General Intelligence List: AGI Permalink: https://agi.topicbox.com/groups/agi/T7ff992c51cca9e36-Mb8c954b92711f2e22b9d2073 Delivery options: https://agi.topicbox.com/groups/agi/subscription
