Yeah I think the key point here more generally (I might be getting this wrong) is that C represents some partial state of knowledge about X, i.e. macro rather than micro-state knowledge. In other words it’s a (non-bijective) function of X. That’s why (b) is true, and the equation holds.
Yeah I think the key point here more generally (I might be getting this wrong) is that C represents some partial state of knowledge about X, i.e. macro rather than micro-state knowledge. In other words it’s a (non-bijective) function of X. That’s why (b) is true, and the equation holds.