The Invisible Circus (circus troupe) Lifespace. The sister cooperative works in partnership with property managers in order to secure and convert interesting, unusual and often semi-derelict spaces into art venues. In 2007, the Invisible Circus managed and ran the disused Pro-Cathedral of the Holy Apostles in Clifton, Bristol. They ran a 12-week series of performances events called "Revelations". For their work in the cathedral, the Invisible Circus won the Venue magazine's Top Banana award in January 2008. They headlined the big top at the Glastonbury Festival 2008. In early 2008 they took over the Bridewell police station in the centre of Bristol. The circus have
Informal logic everyday discourse." Their meaning of non-formal is taken from Barth and Krabbe (1982), which is explained below. To understand the definition above, one must understand "informal" which takes its meaning in contrast to its counterpart "formal." (This point was not made for a very long time, hence the nature of informal logic remained opaque, even to those involved in it, for a period of time.) Here it is helpful to have recourse to Barth and Krabbe (1982:14f) where they distinguish three senses of the term "form." By "form," Barth and Krabbe mean the sense of the term which derives from