In the context of subject ontogeny research, that is, the study of how subjects change or do not change through revision of indexing languages, there a number of methodological questions. The nature of semantics, ideas, and subjects is a long and rich discussion in the context of knowledge...

Monetary-policy rules are attempts to cope with the implications of having a medium of exchange whose value exceeds its cost of production. Two classes of monetary rules can be identified: (1) price rules that target the value of money in terms of a real commodity, e.g., gold, or in terms of...