> But I find studies based only on demographic calculations silly without some kind of reason why the data is the way it appears to be. Before you can explain

> But I find studies based only on demographic calculations silly without some kind of reason why the data is the way it appears to be. Before you can explain a phenomenon, you first have to observe it. And if observing it is a major act in itself, then it is quite valid to publish observation and explanation separately. Perhaps it is even better to publish separately, because then you don't get data and interpretations mixed up.