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> But these colliders are so expensive

The LHC has been in operation for about 12-14 years, and has been a "thing" from planning onwards for almost 40. It's cost $9B, split between a huge list of countries.

Estimates of waste in the US medical system range from around $500B-$2T annualy. The lower end of that scale would support starting a new, fully funded, project of a similar scale for every state in the US every single year.

At a multi-national, multi-decade scale I just don't think it's actually that much money.

> all for the sake of discovering a tiny subatomic particle that we have no way of using

There are few ways I'd look at this.

One is that fundamental science can bleed into regular use over time, look at lasers. IIRC they had no clear use when invented, but are now absolutely key to so much. While the LHC had a headline goal (at least publicly) it's not just discovering one thing, it's a large tool to test fundamental physics.

Another is that this money and work doesn't go nowhere. People are paid to work on big complex problems, building and designing magnets, detectors, computing systems, software for analysis, etc. A lot of that is not going to be entirely custom, and at the very least supports companies & the supply chain for newer advanced technology. NASA I think occasionally puts out some lists of things that derived from their work.

Beyond that, I think there's value in getting a lot of people in a lot of countries to work together on a broadly non-political goal.



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