Glossary

Classical Probability Theory
All theories of probability are interpretations of the probability calculus and our ordinary notion of "the likelihood" that some event happens.  In classical probability likelihoods are determined by the formulat f/ n, where n is the total number of logically possible outcomes, and f is the total number of favorable outcomes (those for which you want the probability).
Classical probability theory obeys the priniple of  indifference, i.e., all logically possible outcomes are assigned equal likelihoods.

Epistemic Regress
If one supposes the only means of justification for a belief is an appeal to another belief, no line of justification can ever come to an end in which the original belief is justified.  If one must appeal to another belief in order to justify the previous belief, then each new belief cited to justify the previous belief will itself need justification.   The only seeming possibilities are (1) ending in a unjustified belief, (2) ending in a self=justified belief, (3) never ending because the regress become circular, or (4) ending in a belief that does not require justification from another belief, usually a self-justifying belief.

Externalism
The view that facts about the knower, whether they are consciously aware of them or not, are the basis for a belief counting as justified or known.

Internalism
The view that one's conscious subjective conception (or one's potential subjective conception) of evidence and evidential relations is the sole basis upon which beliefs can become justified or known.

 Nomological

Law-like, particularly general physical or logical laws.  It is the adjective form of nomology: the study and/or discovery of general physical and logical laws.

Subjunctive Conditional
A conditional statement whose antecedent is known (or, at least, believed) to be contrary to fact. Thus, for example, "If George Bush had been born in Idaho, then he would never have become President." Unlike material implications, subjunctive conditionals are not made true by the falsity of their antecedents.

Counterfactuals
Situations or events specified using subjunctive conditionals.