Cough... y combinator... https://en.wikipedia.org/wiki/Fixed-point_combinator#Fixed_point_combinators_in_lambda_calculus https://en.wikipedia.org/wiki/Fixed-poi

Cough... y combinator... https://en.wikipedia.org/wiki/Fixed-point_combinator#Fixed_point_combinators_in_lambda_calculus https://en.wikipedia.org/wiki/Fixed-point_combinator#Fixed_p...