Re: Is everything before the destruction of the kelvin exactly the sam
^ Incorrect. Tasha and the Ent-C travelled into the past of the *same* timeline. But since the Ent-C's sacrifice was already a part of history, they didn't create an alternate timeline; merely fulfilled the existing one. (Nero and Spock Prime, on the other hand, created a branching timeline, since their actions were not a part of history.)
It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shakes, the shakes become a warning. It is by caffeine alone I set my mind in motion.