According to the statement, a scientist is not a person that answers questions correctly. A scientist is a person that is curious and asks the right questions in order to obtain more knowledge. Their ability to ask the right questions allow them to make important discoveries and inventions.
Scientists first hypothesise and predict results. They then carry out experiments to prove their hypothesis. If their method is valid and results are reliable, they can then formulate theories. Hence, we increase our knowledge about how nature works.
For example, if Edward Jenner had not asked why milkmaids who had cowpox did not later get smallpox, our knowledge about immunology would still be missing.
Of course, there is no point in asking the right questions if they are not answerable. Without any answers, our scientific knowledge will not grow. Therefore, some can argue that right answers are more important than right questions.
Scientists must ensure that they carry out studies and researches which can assist future scientists to answer questions which are still a mystery today. The most famous question is how the universe began. Most of the scientists believe in the Big Bang because the evidence supports it. However, there have been many instances in the past in which theories were falsified many decades after their formulation.
Without the right questions, we cannot obtain the right answers and without the right answers, we cannot obtain more scientific knowledge. Therefore, the ability to ask the right questions is necessary to learn more about ourselves and our surroundings.