 The constructive empiricist disagrees. Among other reasons, she can cite the earlier mentioned explanatory power of false theories. Additionally, the constructive empiricist might insist that use of a theory need not entail a commitment to the theory’s entire ontology. A person offering an explanation speaks from within the language of the theory she accepts. Consistent with that acceptance, she is “conceptually immersed” within the theory. But such use of language need not reflect the individual’s epistemic commitment, which may be merely to take the theory to be empirically adequate (van Fraassen 1980, 151–152). So, for instance, talk of possibility and necessity can be thought of not as talk about some objective modality in nature, but as talk of what phenomena fit in the models of the accepted theory (van Fraassen 1980, 201–202). ‘X is possible’ can be interpreted as ‘X appears in some model of the theory,’ while ‘X is necessary’ can be read as ‘X appears in every model of the theory.’ Again, the constructive empiricist sees the scientist as “immersing” herself in the world of the theory, talking as if the theory were true, with language reflecting the structure of the theory. But she need not take the theory’s modal structure to correspond to any in reality.