I was always curious about Daniel's journal. It always seemed like he was reading someone else's work. Where did he get it from? How does he know so much about the island, and secondary protocols? After watching most of the episodes concerning Daniel the past few nights, I have determined why Daniel may have been so upset when he found out about the Oceanic flight crashing. He already has his journal, and it was given to him by either Charles Widmore or his mother, Ellie Hawking. Everything in the journal has been written by Daniel when he hooked up with Dharma in 1974. I believe we will find out in a few episodes what has happened to him. He knows that either Charles or Ellie will leave the island, and they will hand deliver it to him in his past. Probably when he graduates at Oxford. I am sure he will look at this with crazed amusement, but once he hears about the Oceanic crash, he will know it is real! , and want to investigate. When he gets the journal, this will begin his quest to learn more about time travel. It has been established that Charles and Daniel have a past since Widmore funded his research. We already know he is involved in the construction of the Orchid station based on the first scene in the Season 5 premiere. In an odd way, this puts Daniel's life in one big loop. Theory by KevinO