Complexity theory doesn't need to have practical applications to be exciting (though it has often led to such practical applications). Complexity theory explore

Complexity theory doesn't need to have practical applications to be exciting (though it has often led to such practical applications). Complexity theory explores the fundamental nature of computation: what is and isn't feasible. It's a window into how the universe works, and so it's exciting in the same way that, say, general relativity or quantum mechanics is.