This thread is basically for weird random ideas about the future, or futuristic visions, that don't merit a thread, but just popped into your head and need a home. Worldbuilding, character ideas, premises, random pictures in your head. You can put any of that here provided it's futuristic and not trolling.
I have this vision in my mind of a really bulky but really powerful form of mental augmentation, some sort of early government/military attempt at posthumanism by grafting so-called "backpack supercomputers" onto an operator's mind. I guess they wanted a posthuman who wasn't so weighed down by computronium as to be immobile. Even still, the system proved to be rather unwieldy; each unit weighed about 55 pounds it was calculated that the weakest posthuman intelligence would need at least three units to support its mind (with the software and neuroscience of the time). Two were designed to be carried like briefcases; the third as a backpack. As if this appearance wouldn't be bizarre enough to passerby, each unit had a spaghetti tangle of wires running out of it, connecting to some kind of electrode-studded cap covering the operator's head. Why? I dunno.
Basically a really crude attempt at creating posthumans, I'd probably date it to 2100 give or take a few years.
I don't imagine it succeeded. They had the raw computing power to lift a dozen or so operators to posthuman status. But due to limitations in software and cognitive science, it proved to unwieldy, both physically and mentally, and operators were only able to effectively use a fraction of their extended computational power. Actual posthumans emerged in the 2150s, and by that point, they looked much less absurd.
Much further in the future, there's a weapon known as an Oxsheni Cannon. It's invented by beings more powerful than posthumans or high ais--kilometer-scale minds dubbed hyperintelligences. As such, its effects are difficult to describe in baseline-friendly terms, but you could say that it utilizes the innate computational power of the local environment to attack the enemy. Whatever the hell that means.
We know that Oxsheni Cannons vaguely resemble, well, small cannons (hence the name) though they fire only a thin stream of a mysterious fog that you wouldn't notice if you didn't look carefully. Those who survive an attack from one often report that it is as if their surroundings spontaneously became sentient and tried to destroy them. Which is indeed the most-accurate possible baseline-friendly description of what happens. Even a well-prepared baseline would almost instantly be killed by such an attack unless a friendly posthuman or high ai bailed them out. A posthuman or high ai would have considerable difficulty escaping an OC attack under their own power, and mitigating or containing the damage is simply impossible for anyone but a hypermind.
It is a common and somewhat curious fact that the weapons developed by hyperminds are not much different in terms of raw power and physical destruction than the greatest weapons developed by lower minds. However, the weaponry of a hypermind is far more subtle--a baseline observing one in operation would be hard-pressed to explain what they even do (other than "Destroy everyone somehow"), much less how they work--and also far less indiscriminate. If a group of militant baselines were hiding in a crowd of civilians, it would be trivial for a hypermind to blast every enemy to dust while leaving little more than a scratch on the surrounding bystanders. It is also known that in wars of high ais, posthumans, and even higher minds, killing the enemy isn't enough--they have to be destroyed, physically and mentally.