Originally Posted by X-Maniac
They might show that Sentinels did exist in some secret base but hadn't yet been unleashed.
Or it might be some event that leads to Sentinels being built.
In the animated series, the Sentinels had already been built at the time of the assassination.
Ok lets say someone had secret plans for sentinels in the late 60s. They're preparing to build them. A message from the future is sent to past to destroy the sentinel plans. The plans are destroyed and so is the creator of the sentinels in the 60s.
The problem is the period in between the 60s and the future. In the filmverse the sentinels dont exist either as plans or final product. So how do they get built in the future when there are no plans and the creator is dead?
And stretch the argument a bit further lets say by coincidence, someone build sentinels after the events of X3. What's the point in sending some back to the First Class period? They've missed the boat by about 30+ years.