 The ‘Privilege-for-current-theories strategy’ has been supported by Ludwig Fahrbach (2011). The key point of this strategy is that the history of science does not offer a representative sample of the totality of theories that should be used to feed the historical pessimism of PI. In order to substantiate this, Fahrbach suggested, based on extensive bibliometric data, that over the last three centuries the number of papers published by scientists as well as the number of scientists themselves have grown exponentially, with a doubling rate of 15–20 years. Hence, he claims, the past theories that feed the historical premise of PI were produced during the time of the first 5% of all scientific work ever done by scientists. As such the sample is totally unrepresentative of theories in total; and hence the pessimistic conclusion, viz., that current theories are likely to be false and abandoned in due course, is inductively unwarranted. Moreover, Fahrbach argues, the vast majority of theories enunciated in the last 50–80 years, (which constitute the vast majority of scientific work ever produced) are still with us. Hence, as he puts it,