Dogs learn words individually, words like “Sit” or “Fetch” or “Stay”. As humans, we require richer, more contextual input. So it is probably best that we learn languages in context, and not from individual lists of words where CI is used with the goal of making sure that certain individual vocabulary words have been learned (for what reason?).
How long are we going to continue, via targeting of vocabulary in the CI movement, to sell out the research so we can bow down to curriculum designs – originally found in textbook models but now thoroughly a part of the CI movement – that have always failed us and have had little positive effect on language gains?