Three of the most iconically evil world leaders of the previous century tried (if I’m feeling generous) to make humanity better by their own definition, but without allowing the science and the statistics tell them they were wrong about the basics.
"... the boy began to delight in his daring flight, and abandoning his guide, drawn by desire for the heavens, soared higher. His nearness to the devouring sun softened the fragrant wax that held the wings: and the wax melted: he flailed with bare arms, but losing his oar-like wings, could not ride the air. Even as his mouth was crying his father’s name, it vanished into the dark blue sea ..." - Ovid
If you have better proposals, name them, let us discuss and maybe we can do even better!
(the movement is really open about this -- which is one of the reasons some people have seemingly weird beliefs -- simply because some people said 'You should be instead doing X!!', where X was saving humanity from existential risks; maybe you should be shouting at us 'You should be instead doing Y!!', where Y is your idea, and if you're right we sincerely, truly hope you can change our minds)
Doing nothing would have been better than doing scientific socialism.
>I understand the worry, but what's the alternative?
Obviously the hardest question. The first and most important issue is the truth. The second most important issue is what are the limits of truth. For me the idea of utilitarianism (and all variations on the idea of a purely rational/mathematical based morality) is an "anti truth", it isn't just false, it false and makes confident truth claims about the unknowable. Of course this an entirely negative claim, but there is one korrolary: People can be fulfilled without me understanding why and completely in despair with me not having any idea how to fix this.
I think nobody should be asking "how can I fix the world" before they have asked themselves if they are the person they think they should be. And whether there is someone there right now close to them, who could maybe really need some help. Of course the world isn't saved by that, but is there any hope if we ignore the people closest to us in favor of vain dreams?
Deadalus was a great inventor and scientist. When imprisoned he devises a means for him and his son to escape, in fact he realizes one of mans greatest achievements, flight. While he is able to control his invention and makes good use out of it (making sure to avoid both extremes), his son can neither control himself nor the technology given to him. In the desire to reach ever greater heights he is ultimately destroyed.
The point is (or at least the one which is so easily read into the story) that all technology is dangerous and that great care needs to be put into how we make use of it.
The idea of using statistics and quantitative methods of the social sciences to devise the best way for humans to live is Icarus grasping at the sun. Very smart people have found new ideas, novel methods and all the mathematics to answer one of mankinds greatest question, if we let them use it a great future awaits. This already was the folly of "scientific socialism", and your new attempt at it will land you in the Icarian see, just like last time.
But it’s also how capitalist governments work. And businesses. And every scientific advancement, including how we decided which of the covid vaccines to give the OK to and which ones to reject. It’s also how the chemistry of the synthetic fibres in your clothes and the plastic in your computer were learned, how the machines which made each component of the latter and assembled them into the finished products became reliable enough. It’s how we even know there’s a rise in obesity levels, how we learned which things are good SSRIs and which have unfortunate side effects, how we learned not to let everyone have as much alcohol as they (or their bartender) felt like, and why various countries allow tobacco to be sold but only with graphic depictions of the consequences (consequences which we only know because of statistics and science). Online advertising is nothing but statistical aggregations; algorithmic timelines and personalised search results and recommend products/content are basically the exact same statistics but used to sell the recommender itself rather than a 3rd party. The politicians in a democracy also do statistics to figure out how well they’re selling their ideas and if they need to change tactics or entirely switch their message (or even messenger).
And, as I said, literal flight, that’s also science and statistics.