John Yu 's trip to Comic - Con has science - fiction fans buzzing about his new book . Yu uses the convention of a time machine to get at psychological issues . Yu : Yu 's character decides to shoot his future self in order to escape a time loop .
John Yu 's trip to Comic - Con has science - fiction fans buzzing about his new book . Yu uses the convention of a time machine to get at psychological issues . Yu 's character decides to shoot his future self in order to escape a time loop .