Sentence:  "I don't know how to tell you this, Aubrey, but you can't go back to 1938 ... the program won't accept any date that I input before 1941." ... "Well, I'll <WSD>go</WSD> to 1941, then." 
Meaning of the word marked with <WSD> tags:  To move or travel through time (either literally—in a fictional or hypothetical situation in which time travel is possible—or in one's mind or knowledge of the historical record). (See also "go back".)