Eh, by recursion I meant specifically the exponential "fib(n - 1) + fib(n - 2)" flavored definition. If you're writing the linear-time algorithm and happen to d

Eh, by recursion I meant specifically the exponential "fib(n - 1) + fib(n - 2)" flavored definition. If you're writing the linear-time algorithm and happen to do the iteration via tail recursion, I don't think there's anything absurd about that