The Tate invites. You do not send in proposals. To write a proposal for the Turbine Hall is to dream seriously. This is a startling and provocative range of proposals, most of them from Ireland, some within the bounds of possibility, some beyond. Contributors grapple with abstractions like truth and fear as well as with the dense physicality and absurdity of the world we live in. The Turbine Hall is occupied by cars or carcasses, sharks or poltergeists, by energies of the mind.