Board Thread:Questions and Answers/@comment-31625365-20170329135349/@comment-26377724-20170330172659

Did Okabe really misuse it? The real problems happens when he lose it.

And yes her mission is to go back in 1975 get an IBN and give it to Okabe in 2010, but she must go in 1975, remember Suzuha ask where Okabe find the IBN, it's for gathering information of where she must drop the IBN when she goes back in 1975. The problem in episode 16 is she doesn't know why she failed, and she try to pass alongside the attractor field convergence by giving them the IBN herself after the date of her departure to the past (a few hours later). But what she doesn't know it's her date of death is fixed in this attractor field in 2000, with a suicide if she failed or with the time traveler's disease if she succeed. See Braunian Motion of Love and Hate if you want more information about this Suzuha and M.Braun