いいの? What does it mean?


These are the lyrics

> でも 全部わかってしまったらどうすればいいの.

My question regards the _ii no_ at the end. The translation I found was that
it means "But when I know everything, what do I do then?" So what does it mean
exactly?




I might say

> but even if I wound up knowing everything, what should I do then?

My reasons for this different suggestion are two-fold.

  1. しまう is a "helping verb" that means "wind up" or "end up"
  2. どうすればいい does literally mean "what would be good to do", but generally "what should I do?"




I might say

> but even if I wound up knowing everything, what should I do then?

My reasons for this different suggestion are two-fold.

  1. しまう is a "helping verb" that means "wind up" or "end up"
  2. どうすればいい does literally mean "what would be good to do", but generally "what should I do?"

