Real world entities are harder to model than we sometimes like to think. This is a problem in all paradigms because its the fundamental challenge of understandi

Real world entities are harder to model than we sometimes like to think. This is a problem in all paradigms because its the fundamental challenge of understanding the world. Entities in the real world often have hidden or poorly understood behaviours. This translates into those moments where you whish you could start all over - because you just learnt something important about your domain.