"By my research, your method of FTL provides a simple way to time travel to, at least, the past. Granted, there are several risks involved."

The light-speed breakaway factor, used by the USS Enterprise and the HMS Bounty are the top articles, there.

"If we're taking into account the lack of simple time travel methods, then why go through the effort, again? If it's hard to achieve, and there's a question that what you change may, in fact, turn out to harm your original intent more than progress it... What would be the point?"