Just fund all the open source projects. Like, all of them.

Nuclear Fusion.

I'm not sure what technology I would choose, but surely it would be related to the climate change.

Get the plastic out of living organisms for fuck's sake

Fusion power or cures for diseases.

Fusion power, should it work, would solve a lot of problems. Environmentally, in particular, but if we could get a decent distribution of reactors around the planet we’d alleviate food problems, water problems, and a whole bunch of suffering of one kind or another. Cheap power would help a lot.

Otherwise, anything to help cure diseases. Genetic, auto-immune, cancers, misfortune, whatever. Alleviate more suffering, let people live and work again.

In everything that has a realistic chance to stop or reverse climate change

Clean nuclear energy

Easily the education system at least here in America cuz it's dog shit. I honestly think there should be another year for high school just one more because kids are coming out of school completely unprepared for anything and I don't just mean common sense I mean jobs entry level jobs kids can't do because school didn't teach them the basics

Edit: I sat down now so I want to elaborate.

I really think schools should focus more on life skills cooking, home improvement, changing your tire and brakes. Everyday stuff you'll run into but a lot of people don't know how to do. Just doing it once or twice gives people the confidence that they can do it and can maybe do more. That's my two cents, that I don't have

room temp superconductors

Cheap powerful graphics cards for all

Reverse osmosis and water filtration technology solutions

UPDATE: Also, why not focus on stopping money going towards cryptocurrency instead of AI. Sure, AI is not the greatest for some, but cryto is a scam every day of the week

how about pocket computers with the power of a smartphone but the common sense usability of a goddamn graphing calculator? i'm sitting on a magic rectangle with more computing power than the apollo mission and it doesn't even let me blink the LED without installing an app?? these things should legally have to come with a scripting environment.

Climate change

cure for tinnitus

I want a machine that works me out while I sleep. I'm talking full body ripped (to my desired levels) all while I get my sleep for the night.

Just electrically stimulate my muscles constantly while keeping me in a deep sleep for 8 hours straight please.

I wanna wake up every morning feeling like I just left the gym after a solid full body work out.

I would say "High Temperatur Superconductor". If they can be made cheaply, they solve our Energy Problems in almost every way. Turbines will become more effective, Transport of Energy cheap and lossless and storage crazy effective. They will also revolitionize meassurement of magnetic fields witch will have a huge impact on medicin and other fields.

I'm sure you'll get a bunch of respectable answers, but keep in mind that secretly, everyone is actually thinking sex robots.

Healthcare, food, and housing for the poor.

Finding new and unique ways to make parabolic mirrors more efficiently and inexpensively

Imagine being into generative AI when the moon is literally red as I type this. You could be looking at the Orion Nebula right now instead of staring at a screen playing charades with a soulless marionette dancing under the hands of billionaires who you're giving a direct line straight into your brain, bypassing all critical thought

Nuclear fusion, right? That's got to be the big one.

Cultured Meat. Without relying on any major breakthroughs, a price competitive with "traditional" meat is feasible with a few rather reasonable and conservative assumptions and developments. Dropping cows as meat source globally alone might be sufficient to slow down further climate change significantly.

Software that is both ridiculously easy to use and able to bypass any and all DRM schemes past, present, and future. As a firm believer that any form of computer (not including game consoles because I don't care about them) software that severely limits when, where, and how you can use your legally purchased games, movies, e-books, etcetera, should be outright illegal, this is my answer.

The Internet Archive - long term storage of as many books/films/music/journals/games as possible.

Public education.

Trains.

Liberate Ukraine 🇺🇦

Photonics.

We are so close it's killing me.

Education.

it's called 'online deliberation' Here is a paper on what it might include: https://deliberation.stanford.edu/tools-and-resources/online-deliberation-platform

Here is my idea on how to implement it: https://www.theconsensusengine.com/ (I'd start on page 25 at the example section)

It's a way to get people to work together by finding common ground and making the internet a friendly place not a hateful one of conflict

It can reduce loneliness by bringing people together based on shared values and interests, as well as location, so you can find a community of people who like the same things, and find a community in your own community to make our localities stronger and more united.

it can be a way to stop and greatly reduce misinformation and the idea that it takes much more work to refuse lies than to make them, but keeping an list of arguments on both sides and letting the consensus based on evidence emerge

it can advance science and the knowledge base of all humans by creating a chain of trust with links, so reproducible things and empirical facts are are stronger and more impactful. This will help find answers in currently unknown directions while also reducing or eliminating the publish or perish model of science. If someone is found to have lied then all their contributions going backwards are effected so that the emergent consensus always works towards truth

it can force hypocrites like almost all republicans and religiousnuts to be faced with their own judgements on their own actions, based on how other people interpret their statements and evidence. This can show delusional people not only that they are wrong, but where they went wrong so they can be aware and try and correct it.

With a huge amount of money to create it and also to give away we can make people want to contribute and use the system because they stand to benifit from it

and it can act as an agora and planning department for all human kind on a multigeneration level where decisions are based on evidence and desire. this along may allow something like this idea to take ahold and be the source of progress for society into the future, because what we are doing now is not working.

I'm fairly certain that we could actually fully automate food production, and might even be able to automate each step from farm to distribution with a little additional effort. The major obstacle that I can tell seems to be the upfront cost of the precision machines necessary to handle harvesting, automating the planting and care has already been accomplished.