To expound on the metaphor I put in this article about inheritance and my mother-in-law: > If you try to illustrate behavior delegation in terms of the "bluepr

To expound on the metaphor I put in this article about inheritance and my mother-in-law: > If you try to illustrate behavior delegation in terms of the "blueprint" metaphor, you quickly see how it totally breaks down. There's no way that my home, lacking a guest bedroom, could simply refer to another house, or to the original blueprints, to provide a bedroom for my mother-in-law when she comes to visit. OTOH, I can delegate my mother-in-law to go stay in a hotel room. Or, I can delegate my mother-in-law to stay on a neighbor's couch, but I can send along sheets and pillows for her to use. In either case, I'm not mutating my own home (inheritance) to handle her visit, I'm relying on someone else to handle it. But it's still my mother-in-law who I send elsewhere, and in fact, I can make sure she takes some "context" (aka, pillows) with her when she does. Again, metaphors are never perfect, but I just thought I'd complete the perspective to contrast inheritance vs. behavior delegation.