 One of the field's aims consists of the systematic attempt to identify what people (essentially or characteristically) have in mind when they think about the topic of life’s meaning. For many in the field, terms such as “importance” and “significance” are synonyms of “meaningfulness” and so are insufficiently revealing, but there are those who draw a distinction between meaningfulness and significance (Singer 1996, 112–18; Belliotti 2019, 145–50, 186). There is also debate about how the concept of a meaningless life relates to the ideas of a life that is absurd (Nagel 1970, 1986, 214–23; Feinberg 1980; Belliotti 2019), futile (Trisel 2002), and not worth living (Landau 2017, 12–15; Matheson 2017).