Some believe that there is no point in reasoning without data. Others cannot accept this and instead get by on reasoning based on intuition and even simply the belief that they should instinctively know. Many of the greatest theories in the world have come thru very little data or none at all. So many of these theories of past periods are later proven with data in subsequent future periods, thus proving you can reason without data.

Speaking from my own point of view and often working on intuition I believe that it is dangerous for innovation and the forward progression of the species to accept the notion that there is no point in reasoning without data. Often, I myself have no data for many of the concepts that I come up with. Indeed this may not mean they are always correct, in fact although many of my concepts or innovation could be said to be outright brilliant, some completely irrelevant, while others absolutely and utterly worthless. Of the ones, which are brilliant most are derived on