Part 1 of Essay
, also known as reductive materialism, is one of the views Churchland uses to describe mind-brain correlation. Churchland believes that the mental states of the body are one and in the same (double aspectism) with brain states. They are the same because the biochemical actions produced in brain states (release of seroton ....

Part 2 of Essay
.... sound and light. "We now know that sound is just a train of compression waves traveling through the air..." (BR323). Society does know or has some common sense notion of how sound travels, yet we still consider it just "sound". Even though we are not automatically thinking when we here a sound, "it is waves traveling through air", we are aware to the fact that is how sound travels. This parallelism is intertheoretic reduction; taking an older version of reductive materialism and using it to help explain a newe ....