Who does cut the wood? (a meditation on Object Oriented Design)

[sandeepshetty]

http://stackoverflow.com/questions/3835299/object-oriented-design-problem

[damiankennedy]

This is a good example if you also include a Saw class and an Axe class. Saw and Axe implement ICutter and IUsable. The Tree class implements ICuttable. Then Worker class calls ICutter.cut(ICuttable)