In Philip K. Dick's "Radio Free Albemuth," the author explores the concept of voices—both real and imaginary—and their profound impact on human events. He poses a thought experiment about Christopher Columbus, imagining what might have happened if an imaginary voice had encouraged him to sail west. This prompts a reflection on the nature of reality and the outcomes that arise from such influential suggestions, regardless of their origin.

The passage challenges the conventional understanding of what is deemed 'real' by suggesting that the effects of an imaginary voice may be more significant than a real one that promotes doubt. If Columbus had followed this imaginary directive and transformed history, one might reconsider the label of 'imaginary' altogether. This philosophical inquiry invites readers to think critically about belief, influence, and the definitions of reality itself.