In his landmark book "The Structure of Scientific Revolutions" Thomas Kuhn describes how the majority of scientific work is actually focused on solving scientific puzzles. That’s what Kuhn calls normal science, and scientists are perfectly trained for and highly efficient in pursuing this endeavour. However, there are times when normal science reaches its limits and scientific revolutions arise, even though invisible to most scientists. Let’s take a look at the reasons for this blind spot and what its wider impact is.