Hacker News Reader

You should try to implement the Fib with tail call and then test it. http://en.wikipedia.org/wiki/Tail_call

First he should implement it properly, remembering last two values at any time. His way is just plain outrageous.

Here the comparison is not about the algorithm, but language with similar recursion logic.

Then he should have used appropriate function to calculate, Ackermann for instance.