Time travelling has always been one of the dreams of mankind. Researches on the wrinkle of time, the tesseract, or the time space warp have hounded us in every form possible.
In the latest movie of X-Men: Days of Future Past, time traveling is not just a dream. It is the end-all and be-all if the X-Men would want to save humanity.
And so I wonder, given the chance "What would I correct from my past to save the future?"