Not true!, it will keep the response time interquartile range small, providing a consistent user experience!

We can use the technique first described here https://github.com/glenjamin/node-fib by using Fibur.pass.

  def fib(n)
    Fibur.pass
    return n if (0..1).include? n
    fib(n-1) + fib(n-2) if n > 1
  end

Now, if you wrap this in Fibur.new, you will get parallel operation!