Peter Norvig covered this two decades ago: http://norvig.com/design-patterns/design-patterns.pdf http://norvig.com/design-patterns/design-patterns.pdf Paul Gr

Peter Norvig covered this two decades ago: http://norvig.com/design-patterns/design-patterns.pdf http://norvig.com/design-patterns/design-patterns.pdf Paul Graham mentioned Norvig's work in 2002: http://www.paulgraham.com/icad.html http://www.paulgraham.com/icad.html