tldr of http://areyoufuckingcoding.me/2012/07/25/object-desoriented-language/

a_tldr.md

• composition instead of inheritance
• autodelegating unknkown methods to composed objects if choice is obvious

go_in_ruby.rb

class BigBox
  def method_missing(method)
    possibilities = instance_variables.map{|ivar| instance_variable_get(ivar) }.select{|obj| obj.respond_to?(method) }
    super unless possibilities.size == 1
    possibilities.first.send(method)
  end
end