Chick and Egg Situation
A situation in which it is impossible to say which of two things existed first and which caused the other.
Q: What came first, the chicken or the egg?
A: The chicken
Q: Where did the chicken come from?
A: .....
Q: What came first, the chicken or the egg?
A: The chicken
Q: Where did the chicken come from?
A: .....
It's a Chick and Egg situation - I don't know whether I was bad at the sciences because I wasn't interested in them or not interested in them and therefore not good at them.