Name and Reference

It is not too much of a stretch of credibility to imagine Frege sitting in a chair, gazing at a fire in front of him.  Now, if he were to hear the sound "Gottlieb" coming from behind, he might turn around, or he might ignore it.  In either case, the utterance of his name functions as a signal calling for a response.  But, because at the moment of utterance, that response is non-existent and indeterminate, "Gottlieb" has no referent.  Thus, the scenario undermines the foundation of Fregean Semantics--that names 'refer'.