In order to explore the current views of the interface community and to dev
elop an understanding of the present state of play, research specialisation
which studies knowledge development, has been applied to research variatio
n in the community's ways of experiencing the 'interface' as a phenomenon i
n composite materials. Ten leaders of the field were interviewed and the tr
anscripts of those interviews collated and analysed. Four dimensions of var
iation in the ways researchers view the interface were uncovered. It is fou
nd that there is not even general agreement as to whether the interface is
an object which can be measured, or an illusive concept. The resulting 'out
come space' or 'collective consciousness' may lead to a broader understandi
ng of the issues involved.