Money does not stimulate receptors in mimicry of natural agonists; so, by definition, money is not a drug. Attractions of money other than to purchase goods and services could arise from instincts similar to hoarding in other species. Instinctual activities without evolutionary function include earning a billion and writing for BBS. (Published Online April 5 2006).
The design and interpretation of self-experimentation need to be integrated with existing scientific knowledge. Otherwise observations on oneself cannot make a creative contribution to the advance of empirical understanding.
It is tough to relate visual perception or other achievements to physiological processing in the central nervous system. The diagrammatic, algebraic, and verbal pictures of how sights seem to Lehar do not advance understanding of how we manage to see what is in the world. There are well-known conceptual reasons why no such purely introspective approach can be productive.
Just as non-well-founded sets extend the usual sets of ZF, so do root reflexive propositional formulas extends the usual class of Boolean expressions. Though infinitary, these formulas are generated by finite patterns. They possess transition functions instead of truth values and have applications in electric circuit theory.