Many of the figures that historians write about died a long time ago. To gain insight into their lives, historians investigate sources that have in fact survived the test of time. But what would it be like to ask Isaac Newton a question in person? And what would you ask him? Isaac Newton has passed away a long time ago, but the modern-day Newtons are very much alive. Due to technological advancement, it has become incredibly easy to get in touch with prominent scientists, and simply ask them a question. They form an important source of knowledge and are first-hand witnesses to science in progress. And basically, time is short: if we don’t strike in time, we lose their testimonies forever.