It's an ill-considered stream of consciousness where I wasn't clearly separating "simplicity of interface" from "simplicity of implementation". Part of what I

It's an ill-considered stream of consciousness where I wasn't clearly separating "simplicity of interface" from "simplicity of implementation". Part of what I was going for is that a clean interface might hide a complex implementation. If you've followed rule 1 and see that "Get" is a bottleneck, it makes sense to apply rules 3+4, and see if there isn't a simpler implementation than the one provided by "Get".