Re: Timeline branching going forward *spoilers*
The post-'First Contact' had a Zephram Cochrane that talked about killer zombie cyborgs in the future.
And how do you know the pre-FC didn't also include that? As has been said before, it could be a predestination paradox. Meaning, there was never a timeline when it did not happen. You can't prove that this was not the case.
"But here you are, in the ninth
Two men out and three men on
Nowhere to look but inside
Where we all respond to PRESSURE!" - Billy Joel