This paper describes work that has taken place over the past three years in the form of an annual deep dive study track within a national conference setting. The work explores the changing influence that big data, and in particular population and social determinants of health data, makes upon the generation of co-created eHealth within a nursing domain. Working with delegates, many of whom returned year after year, the paper reports the discussion themes and ideas that evolved over time. The paper is presented as an example of connected reasoning and personal development by all those involved and is offered as a distributed think tank for further discussion and debate.