No, I said it is like a hash table... I didn't say that we need a hash table! What I meant is that the array is like a hash table that holds all of the Fibonacci numbers, and calling fibs[x] is like the hash function for it. The more I try to explain this, the less this resembles a hash table, so I'm going to stop right there, haha! It just reminded me of a hash table because you can look things up very quickly (just like you can look up each Fibonacci number very quickly because they are already calculated in an the array).