It looks like I badly misunderstood your comment. When you wrote "the researchers," I thought that was a coy way of referring to yourself in reference to the two experimental results of which I questioned the ethics.
I'm not arguing for the optimality of compliance with an IRB or other "ethical" guidelines - I'm doubtful they do a reasonable job of creating morally optimal research protocols, and they clearly prevent the discovery of certain interesting or useful results - like your results from these posts that relied on deception. And that doesn't even account for the compliance costs that I now realize was the point of your comment. Oops
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