Calvin and Hobbes by Bill Watterson for January 10, 1990
Calvin: Ok Hobbes, press the button and duplicate me. Hobbes: Are you sure this is such a good idea? Calvin: Brother! You doubting Thomases get in the way of more scientific advances with your stupid ethical questions! This is a brilliant idea! Hit the button, will ya? Hobbes: I'd hate to be accused of inhibiting scientific progress...here you go. Scientific progress goes "boink"? Calvin: It worked! It worked! I'm a genius! No you're not, you liar! I invented this!