For the record, it was two basements -- we moved office in the middle -- and a bigger issue was actually overheating. But your point is basically right! The model is a lot better at certain kinds of ideas than others. Particularly concerning was the fact that the first cluster I noticed getting good was all the different variations of 'the headset is uncomfortable/heavy' etc. But this makes sense -- what participants talk about has a lot to do with what kinds of ideas the model can pick up, and this was more or less what we expected