“…Those lit er a tures may not be about excretion, but for all that they may still add depth to a treatise on "contrasting as an analytic technique. " In our lit er a ture list you will find a few titles in which this technique has been deployed for analyzing materials closely related to excreting: washing (Pols 2006), tasting (Mann 2018), eating (Yates-Doerr and Mol 2012), cooking (Ibáñez Martín and de Laet 2018), metabolizing (Vogel 2018), composting (Abrahamsson and Bertoni 2014). Others talk about sites and situations, about topics, that may seem to be further away: human disabilities (Moser 2005), animal diseases (Mather 2014), spirits ( Jensen and Blok 2013), words (Mann and Mol 2018), the world (Law 2015;Omura et al 2019).…”