Its cos I just watched the final episode of Mirai Nikki after jumping from the 6th episode. THis meant I had no idea what was going on and I had to look it up on wikipedia which naturally gave me a lot more detail than I cared for and got me interest in the ability to predict the future. Also butterflies. Butterflies are amazing. Did you know that most of the time, when backward time travel due to natural circumstances occurs in media, butterflies will be present? Look carefully next time you watch something with time travel that isn't through use of a time machine. Higurashi no Naku Koro ni, Umineko no Naku Koro ni, Others.