 Feminist radical empiricist holist accounts such as Anderson’s and Clough’s present challenges however. Solomon questions whether any single approach to values will be able to provide an account of the varied ways that they can function appropriately in science. She argues that values are not all of one type and consequently, when relevant (and she notes that they may not always be relevant) they may be relevant in different ways, playing different roles in knowledge production (Solomon 2012: 446). Audrey Yap worries that some values may not be sensitive to evidence in the ways that Anderson’s and Clough’s accounts would seem to require (Yap 2016). Other feminist empiricist approaches, such as Helen Longino’s contextual empiricism discussed briefly in the next section, may avoid these concerns.