Shortly after not only travel through time, but also between worlds was discovered in the 26th Century, it was surmised that certain events could be changed without damage to the timeline. Instead just creating a parallel reality. With some experimentation, this was proven. Time Can Be Changed
I get the feeling TARA wants to see some of us accused as witches with all the people ending up with powers, especially when the people don't know how to use or handle the powers. At least, these powers or at least mine are easy enough to avoid being caught or seen as having.