The choice to develop coding after the shadowing is interesting. I can certainly see the advantages based on the discussion that follows. Are there disadvantages to this? I had expected that the coding would be defined in advance. I wonder if there are advantages to defining the coding scheme in advance? This may merit discussion. Even if the author does not think there are advantages it may be worth noting. Often times in social science we want the enumeration process, the coding process, or other stages of the data collection/coding to be independent of one another to avoid bias. So, for example, when administering lab experiments, often times the researchers administering the experiments do not know what the research question is. Or when coding text data the coders often times do not know what the RQ is. Here the author is suggesting that the coder use the information learned from the shadow notes to inform the coding scheme. There are clearly merits to this approach, but the tradeoffs may merit a bit more discussion.