In the review session, someone raised the question "What is logical positivism"? My seat-of-the-pants definition was a bit off... So for the sake of correctness, here's the actual definition (in a nutshell):
Logical Positivism is a school of thought that holds that knowledge can only be obtained through direct observation and experience; logical positivists subscribe to verifiable science rather than theology.
Think about how this philosophy relates to the readings, especially Marx and Proctor. Congrats on stumping the undergraduate TA.