I resonate more with Gary's perspective on this topic. Does our past not make us who we are? Experience shapes us and is the catalyst for new ways of perceiving and being. With all of our choices being so linked, I can't really fathom the idea that you can change one without it effecting each and every other. I'm not saying that it is impossible but it doesn't really bode well with me. With 3rd density being a place of choice and limitation, it seems that a single fixed time-line is more appropriate for such an adventure. This star trek quote is appropriate:
Picard Wrote:There are many parts of my youth that I'm not proud of... there were loose threads... untidy parts of me that I would like to remove. But when I pulled on one of those threads... it unraveled the tapestry of my life