Because they already learned all they could at lower energies, and to get to higher energies requires a bigger machine, at least until someone comes up with a practicable new approach.
It's going toward building the immense accelerator, and the immense detectors, and all of the research and salaries that go along with it. The data are the results of particle collisions, which can tell you at the most fundamental level how the universe works. It has no foreseeable practical application.
Nah, physicists already did that and gave humanity the ability to destroy the planet. No point in repeating ourselves.
Should society spend those billions learning about fundamental physics? That's a question for society to answer. Personally, I decided to do something with at least some potential useful applications.
but like been said the practical application of these experiments is in the building and creating of new devices, it's like Nasa and going to the moon, going to the moon didn't get us new technology and advances, it was all the stuff goig into getting up to the moon.
The excitement for alot of these projects for non scienctists is the advancements made to get there.
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