<TG soapbox> The following is a guest post by Jon Rawski. I’m ruthlessly abusing my editorial powers to insert this reminder that the Outdex welcomes guest posts. Maybe you’d like to start a discussion on a topic that’s dear to your heart? Or maybe you have something to add to an ongoing discussion that can’t be fit in the comments section because it’s too long and involves multiple pictures and figures? Just send me your post in some editable format (not PDF) and I’ll try to post it asap. If you want to reduce the time from sending to posting, check the instructions on how to reduce the editorial load for me. Anyways, enough of my blabbering, let’s hear what Jon has to say… <TG soapbox/>

To spice up the Underappreciated Arguments series, I thought I’d describe a rhetorical chestnut beloved by many a linguist: Marr’s Three Levels. Anyone who has taken a linguistics class that dips a toe into the cognitive pool has heard of the Three Levels argument. It’s so ubiquitous that it’s been memed by grad students.

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