1.  What is the point of Jackson's thought experiment about the color-challenged scientist?

(Google Drive, PHI, Chap2Sec4 PowerPoint)

2. Do placebos or nocebos provide a good reason for believing in downward causation? Can the evidence be explained without postulating downward causation? If so, how?

(Google Drive, PHI, Chap2Sec5 PowerPoint)

Google Drive Link:

Each question around 300 words.