They are both Turing-complete, so they can both *compute* the same things. This ...

dllthomas on May 6, 2013 | parent | context | favorite | on: Emacs v. Vi Is Rooted in the Love of Lisp

They are both Turing-complete, so they can both compute the same things. This is not the same thing as saying they can both do the same things - as others have mentioned, there's the question of what they have access to (hooks/API).