module Enumerable

def many?

if more than one person is over 26.
much like any?, so people.many? { |p| p.age > 26 } returns +true+
equivalent to enum.to_a.size > 1. Can be called with a block too,
Returns +true+ if the enumerable has more than 1 element. Functionally 
def many?
  cnt = 0
  if block_given?
    any? do |*args|
      cnt += 1 if yield(*args)
      cnt > 1
    end
  else
    any? { (cnt += 1) > 1 }
  end
end