I don't think you are an idiot. Being mistaken or providing an incomplete analysis doesn't make you an idiot, it most likely just means you had neither the time nor the tools to do better just now. Your response clarified the article for me.
And admitting to the error puts you right at the top of the list of non-idiots in my opinion!
And admitting to the error puts you right at the top of the list of non-idiots in my opinion!