At the feet of the Great Monad, or, How the functional programming craze plays out

Dost thou know the Seven Immutable Laws of FP?

Stob "Today, object-oriented programming (OOP) rules the IT industry absolutely. It is impossible to dislodge. While functional programming (FP) has seen a resurgence of late, it is typically used as an adjunct to OOP." - Louis Cyphre, 'Why are functional programming languages used so rarely in practice?'"