When asked about the mechanisms of the time traveling, he replied that he was no engineer. When asked to provide a better picture of his time machine he replied that he wasn't a photographer. When asked to use the time machine to do something paradoxical (i.e., kill his grandfather) he replied that that would only affect this universe, but not his.]When asked about the mechanisms of the time traveling, he replied that he was no engineer. When asked to provide a better picture of his time machine he replied that he wasn't a photographer. When asked to use the time machine to do something paradoxical (i.e., kill his grandfather) he replied that that would only affect this universe, but not his.