In response to Weingart and Guenther [2016], this essay explores the issue of trust in science communication by situating it in a wider communications culture and a longer historical period. It argues that the popular scientific culture is a necessary context not only for professional science, but also for the innovation economy. Given that the neutrality of science is a myth, and that science communication is much like any other form of communication, we should not be surprised if, in an innovation economy, science communication has come to resemble public relations, both for science and for science-based innovations. The public can be sceptical of PR, and may mistrust science communication for this reason.