There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.
善于干事情的人,不一定能把事情干好;善于开头的人,不一定能把事情很好地结束。就好像发起者不一定有能力做成事,很多公司做大做强以前会炒掉不合格的CEO,即使他是创始人。