There is a gap between the discipline of economics and the public it is supposedly about and for. This gap is reminiscent of the divide that led to movements for the public understanding of and public engagement with the natural sciences. It is a gap in knowledge, trust, and opinions, but most of all it is a gap in engagement. In this paper we ask: What do we need to think about ― and what do we need to do ― in order to bring economics and its public into closer dialogue? At stake is engaged, critical democracy. We turn to the fields of public understanding of science and science studies for our approach, finding three themes of particular relevance: understanding, expertise, and audience. We then discuss participatory budgeting (PB) as an example of fertile ground for engagement. We argue that with an economic-engagement focus, activities such as PB could be extended into the public-economics gap and provide avenues for an economic equivalent of participatory science: a form of participatory economics.

Arthur Dent's reluctant hitchhike through the Milky Way would not have been possible without the babelfish, which was nourished by his brain waves and in return decoded foreign languages for him. In much the same way, public intellectuals serve as science and technology academia's babelfish for the non-STEM savvy. While STEM academics continue to push back the frontiers of knowledge, public intellectuals equip the community with the knowledge we need to make big decisions, both for our own individual lives and for our society.

van den Sanden and Vries curate reflections and insights about the shared goals, practices and processes which bring together academics and practitioners in science education and communication. The book spotlights areas of productive overlap but is just the beginning for meaningful collaboration.

Englehard et al. provide a wide-ranging look at synthetic biology, from discussion of how one might classify different synthetic approaches to consideration of risk and ethical issues. The chapter on public engagement considers why synthetic biology seems to sit below the public radar.

Science cafés offer a place for information and discussion for all who are interested in science and its broader implications for society. In this paper, science cafés are explored as a means of informal science dialogue in order to gain more understanding of the science-society relationship. Perspectives of visitors, organisers and moderators of science cafés were analysed. Findings show that science cafés stimulate discussion and engagement via informal learning processes. Visitors come to broaden their knowledge in an informal ambiance. Organisers and moderators hope to enhance understanding of science and confidence of people to participate in debates.

This paper provides an analysis of the implementation and the outcomes of Scienza Attiva, an Italian national project for secondary school students, that makes use of deliberative democracy tools to address socio-scientific issues of great impact. The analysis has required a mixed method including surveys of students' pre- and post-project opinions, focus groups and interviews with students and teachers. The results from this evaluation study provide evidence that the project improves students' understanding of socio-scientific issues, strengthens their awareness of the importance of discussion and positively influences interactions in the classroom.

Citizen science continues to grow, potentially increasing competition among projects to recruit and retain volunteers interested in participating. Using web analytics, we examined the ability of a marketing campaign to broaden project awareness, while driving engagement and retention in an online, crowdsourced project. The campaign challenged audiences to support the classification of >9,000 pairs of images. The campaign was successful due to increased engagement, but it did not increase the time participants spent classifying images. Engagement over multiple days was significantly shorter during the campaign. We provide lessons learned to improve targeted recruitment and retention of participants in online projects.

Much of science communication is peer-to-peer communication in collaborative networks for innovation from the fuzzy front-end of innovation until the marketing back-end. Scientists and engineers at meetings tables talking about new developments. Or scientists and engineers in collaboration with industry and policy makers, discussing various scenarios for implementation of e.g. health care services. However, this focus on science communication 'within the action' of uncertain development of science and technology and its attached academic domains such as innovation studies, high-tech marketing and branding, is not often discussed in the science communication literature. Lacking these considerations at this micro-level communication, means we have an incomplete picture of the ways that discourses develop and are shaped by actors, particularly during the upstream phases of innovation.

This paper argues that for citizens to be engaged with science they need to be able to share analytical techniques as well as the results of analyses. The category of "brand" which condenses the instrumental with the symbolic is both powerful in its uses and familiar to laypeople. The paper shows briefly how the categories of penicillin, biotechnology and applied science can be analysed in this way. It suggests that historians apply such an approach to the historiography of such new categories as synthetic biology and that this might be useful to curators of such topics in museums.

Differences in viewpoints between science and society, like in for example the HPV-vaccination debate, should be considered from a socio-technical system perspective, and not solely from a boundary perspective between the lay public, medical doctors and scientists. Recent developments in the HPV-vaccination case show how the debate concerning uncertainty amongst scientists and the lay audience is mostly focussed on the improvement of understanding of lay people about why vaccination is important. This boundary thinking leads to the idea that once the boundary is crossed, the problem is solved. However, such ‘bug-fixing’ and technocentric boundary thinking is not leading to sustainable resolutions. We view science communication as a key aspect of the socio-technical system of scientific, technological and innovation  development, in which the vaccine and its corresponding immunisation program are socially constructed. A process of construction that takes place all the way from the fuzzy front-end of their scientific conception until the marketing back-end. The authority, legitimacy and therefore the license to operate of scientists, engineers and policy makers are discussed, primarily at this boundary, but develops during the whole process of innovation. During upstream processes, professional roles and according behaviour are also defined.

In this commentary we state that the development of science communication strategies should also start upstream, and that the ‘bug-fixes’ of improved listening to (and not by) the lay audience, could be become a more sustainable solution to the HPV-debate if this process of listening by experts considers the socio-technical system of vaccination as a whole. One of the outcomes might be that the dialogue between scientists, policy makers and the lay audience is about the various possible scenarios that deal with inherent scientific and societal uncertainty in which the inevitable uncertainty of science becomes more explicit. It is not known according whether this will lead to more profound interactions, however we would like to explore this possibility a bit more from an uncertain innovation process point of view. This could clear the way for a process of co-inquiry into ideas concerning shared responsibility and accountability. The latter means that the focus in the debate is more balanced and concerns the social network, and is not purely focussed on the betterment ofunderstanding by the lay  audience. Moreover, in this way we consider communication and interaction between actors not as a means of crossing any boundaries (since that may be impossible), but as a means to perturb a status quo or equilibrium within a network of actors. This makes apparent boundaries more explicit and discussable. Methods of interaction, e.g. based on concepts like midstream modulation, may lead to another discourse and give way to new dynamics in this social system.