A More Fundamental Interaction?

Physicists are reductionists who seek to explain how the universe works with as few fundamental laws as possible. While physicists are generally content that the universe can be boiled down to only four fundamental interactions, there is simultaneously a desire to see if it can’t be simplified even further. The goal to unify the four interactions has been chased for decades. Einstein was a champion of unification, and dedicated much of his last 30 years to an unsuccessful attempt to unify gravity and electromagnetism.