A combination to some degree. Scientists yearn to stumble upon something hitherto unexplainable that requires a new theory or validates or definitely rules out some of the more fringe theories.

While other natural sciences often suffer from an abundance of things that "merely" need to be documented, or where simulation capability is the limit, particle physics is mostly based on a theoretical framework from the middle of the 20th century that has mostly beth explored.

Getting ahead in particle physics comprises measuring many arcane numbers to as high precision as possible until something doesn't line up with existing theories or other measurements anymore. More people could help with brainstorming and measuring things that don't require humongous particle accelerators.