gistfile1.rb

    def completed?
      if subwizard?
        all_instances.all? do |instance|
          instance.decendants.all? do |decendant|
            decendant.completed?
          end
        end
      elsif question?
        model && model.valid?
      else
        decendants(true).all? do |decendant|
          decendant.completed?
        end
      end
    end