No, not really surprising.
I would just clarify though, that the data does not need to be 'bad' in the sense that it is false. We might have data that are accurate but misinterpret them by generalising to the larger context or mistakenly transposing them to a different one.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.