/sci/ - Science & Math

>want to learn some basic category theory before delving into functional programming
>pick an introductory book with good reviews
>read the preface to check if I need to learn some additional topics first
>"In principle, one could study category theory after learning some basic set theory and logic, as no other prerequisites aren't strictly required, but without some level of mathematical maturity it would be difficult to see what the point of it all is."
>seems like I should be fine
>"A group extension of an abelian group H by an abelian group G consists of a group E together with an inclusion of G → E as a normal subgroup and a surjective homomorphism E ↠ H that displays H as the quotient group E/G." as the first fucking sentence
What exactly does she mean by mathematical maturity and how do I obtain it so that I would be able to understand texts like this?