See also Brute fact Casuistry First cause Intelligibility (philosophy) Law of noncontradiction Law of thought Notion (philosophy) Unmoved mover Present  Primitive notion Principle Psychology Semantics Semiotics 
See also Brute fact Casuistry First cause Intelligibility (philosophy) Law of noncontradiction Law of thought Notion (philosophy) Unmoved mover Present clean room implementation Primitive notion Principle Psychology Semantics Semiotics a priori
A
clean room implementation
A
a priori