How It Goes

Riddle: Jimmy Jackson Johnny John is doing math. His teacher asks him how that 1,1,2,3,5,8,13,21 mathematical term would go backward. Can you help Jimmy solve this?

Answer: This is impossible for the most part. The pattern would just go Infinity, Infinity, Infinity and so on. Source: https://riddles.com/10958

Jimmy Jackson Johnny John is doing math. His teacher asks him how that 1,1,2,3,5,8,13,21 mathematical term would go backward. Can you help Jimmy solve this? — How it goes by Astral Riddle