[ryanmcgarvey]

That's the problem with software - it's decisions all the way down. Outside of prototyping, there's very little "work" to be done that doesn't contain some kind of systems decision.

[calvinmorrison]

this can be limited though. I just went through refactoring a whole set of classes that implement the same interface, but it was not defined as an Interface. now any new class that implements this _must_ meet at least some expectations, enforced by the code.

So in one way, OOP is great for limiting side effects.