Actually you can time travel based on the words time travel. Time - the measure of energy that a system uses when traveling along a path. Travel - to move along a path based upon the amount of energy needed to complete the traveling from point A to point B.
So basically if you walk along a tape measure that is 30 feet long and remember the localized events in your mind and then walk back to each point you have metaphysically time travelled but in order for real time travel to occur all of the events of each moment on the tape measure would have to revert to that exact same position relative to the point on the tape measure meaning that the entire Universe would have to be in the state that was remembered at each specific point along the tape measure. Which an individual person is not capable of doing because of factors like ants and microbes not even knowing what Time Travel was.