The other departments of the College work in prose, and prose is a hedging medium. A sentence can qualify itself, subordinate its own claim, and retreat into the passive before the reader has finished it — which is precisely what the English Department was constituted to catch. An image cannot do any of that. It commits. Every decision in it — what is lit, what is cropped away, where the eye is made to land — is a claim standing in the open with no clause to hide behind.
This department studies that commitment. Not art appreciation, not art history: the picture treated as apparatus, examined for what it produces in the person looking at it. The question is the College's own, asked in a medium that answers faster than language does.
The department is built in three tiers, and the tiers mean something.
A department is a standing interest — the whole visual field, held open. A gallery is a rule: a named operation performed on source material, stated in advance, binding on everything hung inside it. An installation is a finished work that submits to that rule and is hung. The gallery is the hypothesis; the installation is the evidence. A department that opened rooms without stating their rules would be a portfolio, and a portfolio proves nothing except that somebody was busy.