> if I solve the reuse issues with some composition and the is-a problem with an interface. I'm not sure how that's better -- you're just implementing inherita

> if I solve the reuse issues with some composition and the is-a problem with an interface. I'm not sure how that's better -- you're just implementing inheritance with more steps. > is both very fragile and usually very short lived. It is and I know you'd make that point but it's better to be fragile and short lived than completely impossible. I have a least one of these hacks that was completely necessary that has been in place for years.