Board Thread:Questions and Answers/@comment-31625365-20170329135349/@comment-122.2.119.129-20171022174155

In episode 15 Suzuha told okabe and kurisu that SERN was able to develop a time machine due to the one made in akihabara which was the phone microwave. And she further said that okabe's first d mail was caught by SERN's tracking system. And she said in order to delete it in SERN's database they need the IBN 5100. For someone coming from year 2036, it sounds like she studied her history lessons on how the time machine was developed and she knew that the first d mail needed to be deleted in sern's database using the ibn5100.