Ciro Santilli @cirosantilli  40

Not "Yt" because that is already "Yttrium". God.

Discovered by Marie Curie, published July 1999.

Discovered by Marie Curie when she noticed that there was some yet unknown more radioactive element in their raw samples, after uranium and polonium, which she published 6 months prior, had already been separated. Published on December 1989 as: Section "Sur une nouvelle substance fortement radio-active, contenue dans la pechblende".

The uranium 238 decay chain is the main source of naturally occurring radium.

Vs uranium: uranium vs plutonium Quora answer by Ciro Santilli.

What a material:

They made gunpowder. Then the American Civil War came. Billions, baby.

Military links carried over well into World War II, where e.g. they built the B Reactor.

Kind of extends the complex numbers.

Some facts that make them stand out:

Unlike the quaternions, it is non-associative.

Wikipedia defines Mind uploading as a synonym for whole brain emulation. This sounds really weird, as "mind uploading" suggests much more simply brain dumping, or perhaps reuploading a brain dump to a brain.

Superintelligence by Nick Bostrom (2014) section "Whole brain emulation" provides a reasonable setup: post mortem, take a brain, freeze it, then cut it into fine slices with a Microtome, and then inspect slices with an electron microscope after some kind of staining to determine all the synapses.

Likely implies AGI.