>>7287296I think I understand it now. Let's work backwards:
The alpha and beta world lines' major turning point is Kurisu's death.Beta: Kurisu dies at Dr. Nakabachi's conference.Alpha: Kurisu doesn't die because Dr. Nakabachi's conference is
canceled.It was canceled because Suzuha's time machine crashed into the Radio Center.Suzuha's time machine crashed because it was
incomplete.It was incomplete because Daru made it during SERN's dystopian rule.SERN's dystopian rule is established because they capture Kurisu.