The Dharma Initiative was reconstituted because of the Dharma video itself. The fact that it was transferred through time was obviously enough to prompt someone to try again. * One of the time traveling survivors tells Pierre Chang about the purge and the end of the Dharma Initiative. Jack, who always thinks altruistically is the main suspect. This person tells him about the purge, George Bush and the Internet. So Chang simply has to record what has been told to him. Pierre Chang has to be convinced by some type of proof.