The question "what is the point of all this?" has dogged architecture for as long as anyone cares to look, but since the millenniumthe purely theoretical yet theoretically possible designs of Margot Krasojevic have taken this question as a challenge. Her latest proposal, a mesh shelter that takes the concept of snow caves and applies it to an artificial structure, is built for an eminently practical purpose: a built emergency shelter for climbers and others caught in extreme conditions. Yet the elaborate, high tech and naturally contoured structure is as much a thought experiment as it is a serious architectural proposal.