The epistemic view on probability came into development in the 19th and the first half of the 20th century, first by the hand of De Morgan (1847) and Boole (1854), later by Keynes (1921), Ramsey (1926) and de Finetti (1937), and by decision theorists, philosophers and inductive logicians such as Carnap (1950), Savage (1962), Levi (1980), and Jeffrey (1992). Important proponents of these views in statistics were Jeffreys (1961), Edwards (1972), Lindley (1965), Good (1983), Jaynes (2003) as well as very many Bayesian philosophers and statisticians of the last few decades (e.g., Goldstein 2006, Kadane 2011, Berger 2006, Dawid 2004). All of these have a view that places probabilities somewhere in the realm of the epistemic rather than the physical, i.e., not as part of a model of the world but rather as a means to model a representing system like the human mind. 