[nods. and makes another mark at the end of the line]
In Bones' future, a crazy bastard named Nero ends up falling into a rip in the time-space continuum. That punts him all the way back here, in front of my dad's ship. Just before I was born.
[draws a line from that point back to another one towards the beginning of the first timeline, then draws a branch from that point.]
That's where things start to change. Starting with the destruction of my dad's ship.