There’s an increasing concern among scholars that, in many areas of science, famous published results tend to be impossible to reproduce.
This crisis can be severe. For example, in 2011, Bayer HealthCare reviewed 67 in-house projects and found that they could replicate less than 25 percent. Furthermore, over two-thirds of the projects had major inconsistencies. More recently, in November, an investigation of 28 major psychology papers found that only half could be replicated.