Algebraic effects are a hot topic. The name sounds fancy but maybe this intuition helps: an effect is like an exception where the exception handler receives eno

Algebraic effects are a hot topic. The name sounds fancy but maybe this intuition helps: an effect is like an exception where the exception handler receives enough information to resume the computation from where it was called. Just like exceptions, effects are dynamically scoped: the handler is always found up in the call stack.