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This paper summarises the roundtable discussions convened by the charity Carr‐Gomm in October 2007. Participants included providers of services to vulnerable people, policy makers and academics, creating a useful mixture of theoretical and practical knowledge. The Social Exclusion Task Force report in 2006 gives a clear indication of the picture of unemployment for vulnerable people. In addition, developments in funding for key government departments, coupled with population projections, suggests that there is a strong external impetus for vulnerable people to be employed. Discussions covered a range of topics including Who benefits when vulnerable people work?, What constitutes good work? and Barriers to supporting vulnerable people into work.Overall, the group concluded that the most urgent priority is for third sector employers themselves to create flexible work opportunities which can be taken up by vulnerable people. This experience should then be used to disseminate learning and to make the case for change with other employers.

This commentary considers the demographic ‘bulge’ of the so‐called ‘baby boomer’ generation and the public mental health challenge that this group will represent as they move into old age. Toby Williamson argues that now is the time to start a debate with the aim of identifying long‐term solutions to these new challenges.

Grief and its concomitant loneliness are common problems in the social process of ageing. Using case study accounts, this paper describes the perceptions of four elderly bereaved people and their experiences of loneliness following conjugal bereavement. Case study accounts provide an opportunity to explore, describe and interpret data that may not yield to a simple analysis. In this paper the accounts include a collection of information on the respondents' experience of loss in the form of ‘durable biographies’ (Walter, 1996) that were typical, revelatory and critical. The respondents took part in semi‐structured interviews about their experiences as part of a larger ethnographic study. This paper reflects on their comments and raises a number of interesting theoretical and practical issues to do with loneliness following conjugal bereavement. The paper points out that bereavement research is dominated by psycho‐analytical conceptualisations which place emphasis on the ‘grief work’ hypoThesis, with less attention paid to bereavement models that highlight the social impact of loss on older people.

Rook McCulloch, the wife of the late Warren McCulloch, died on 4 June 1991, at the McCulloch Farm in Whippoorwill Road, Old Lyme, Connecticut. She was 92, and devoted much effort during the last ten years of her life to the compilation of a four‐volume collection of Warren's works, now published by Intersystems Publications, Salinas, California. He died in 1969, and the birth of cybernetics has been attributed to his collaboration (along with Walter Pitts) with Norbert Wiener.

Recalls that the first proposal for artificial neural nets was more than half a century ago. Subsequent developments are reviewed, with particular attention to the interface between regulatory, continuous processing and symbol manipulation. Recalls the standpoint of McCulloch and Pitts, that artificial nets are not precise models but are potentially informative about living systems.

The author reminisces about an experience in the 1950s that revealed a much earlier plan to set up a research centre with aims close to what later came to be called cybernetics. That plan was thwarted by economic considerations but the general approach found expression in the later work of Warren McCulloch and of a group around him, the latter first in Chicago and then in the Massachusetts Institute of Technology. This paper aims to discuss the attempt to set up this research centre.

The emphasis is on study of the brain and its modelling in mechanistic terms, and the limitations of various experimental techniques are discussed.

Despite much very good work and technical developments, the detailed working of the brain is still mysterious, and quite fundamental aspects are still debatable. The suggestion that the 1990s would be the “Decade of the brain” was premature.

Technical developments including scanning techniques, especially NMR, have aided the analysis of brain functioning and no doubt other developments will emerge. Modelling by methods of artificial intelligence is likely to be helpful, but must be seen as producing bold, and therefore tentative, hypotheses that workers should be ready to modify or abandon.

The trip to Orange, New Jersey has been described and discussed previously but not in such detail.

The aims of cybernetics and of system research are shown to embody a strong bias towards biological studies. Cybernetics subsumes the ideas of “experimental epistemology”, a study which attempts to explain mental processes over the whole range of viewpoints from the single‐cell recordings of the neurophysiologist to concept‐formation and representation of knowledge. Studies which are more restricted in scope have been of practical value; “experimental epistemology” is a long way from achieving its goal. It has, however, provided useful stimulation and has an interesting bearing on viable systems other than nervous systems.