Because nested factory patterns are a legacy of an era where lambdas were not well understood, or poorly represented by the type system Continued use of Factor

Because nested factory patterns are a legacy of an era where lambdas were not well understood, or poorly represented by the type system Continued use of Factory patterns doesn't deserve outright mockery, but does deserve immediate and firm correction. It introduced confusion and complexity and ontology to a place where a nullary lambda would do everything it does, and slice away all the ambiguity.