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Cake day: January 12th, 2025

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  • Uploading your consciousness to a machine wouldn’t really extend your lifespan. Think of it like moving a file from one device to another; the file isn’t actually moved, you just get a copy on the second device. You and your digital clone will also begin to diverge immediately as the lived experience of being a new digital entity would be different from continuing life as a meat person.

    But your mind already operates this way. Human consciousness is naturally discontinuous. Your consciousness is essentially a program that runs on the hardware of your mind. And your consciousness is not a continuous thing. If you’ve ever been sedated for a surgery, you’ll know that when you’re sedated, you are just gone. You don’t dream. You don’t drift. You just don’t exist for however long you are under. The experience of sedation is the experience of death.

    And beyond that, your consciousness ceases every time you go to sleep. Yes, there are some periods of the sleep cycle, such as REM sleep, where your consciousness is active in an odd state. But there are others where again, no one is home. There are periods of every night where your conscious mind ceases to exist entirely.

    “You,” a conscious mind experiencing the universe, exist for less than a day. Tomorrow a new version of you will be spun up to experience the world, including all of your memories. But the you of your current conscious self will cease to exist this very night.

    If I go to sleep, and instead of a new copy of my consciousness springing up tomorrow in my body, a copy activates on a computer, is that still me? Really, I don’t see why not. Both would have my full memories. Both would have my personality. Neither would be a direct continuation of my conscious experience. Ultimately, they’re both copies of my current conscious self.

    I will not live past today. I, you, and every other human consciousness exist but for a single day (in normal sleep conditions.) We exist in a chain of such iotas of life, the self of each day passing the torch to the self of the next. Each self is united only by shared memory. That is how every human consciousness experiences life.

    Everyone wonders if uploading your mind to a machine will extend your lifespan. What they should be wondering is if waking up each morning does the same.

    Try to make the most of each day. Remember, you only get one.








  • It can be done and has been researched. See Project Plowshare.

    People who say we can’t build fusion reactors are only partially correct. (And no, I do not mean that we can build tokamaks that are net energy negative.) We can build energy-positive fusion reactors, and we’ve known how to do so since the 1950s.

    The idea was that you would build an enormous underground chamber. Then fill it with salt. Then detonate a small hydrogen bomb inside the chamber, instantly boiling the salt. You then run the salt through turbines to generate electricity. You power a city by setting off a nuke every one and awhile.

    The results of this work were that yes, it seems possible to build a power plant that runs off of hydrogen bombs. We do in fact know how to build a fusion reactor today. The problem? Simple economics. This method just isn’t cost-competitive with traditional electricity sources.

    This should serve as a cautionary tale for those hopeful for the future of fusion or advanced fission concepts. It doesn’t matter if you manage to build a tokamak that returns net energy. Ultimately it’s just a cool science experiment. What DOES matter is if you can do it cheaply. And this is actually why I’m skeptical of fusion as a power source. Even if we do ever manage to make non-bomb fusion plants produce net energy, they would struggle to be cost competitive with renewables+batteries.