Phil's right in that it's usually an 'external' judgement, and Tom, Jeff, I can certainly understand not wanting to be pigeonhold by outside voices/influences. But it seems to me that 'defining' is something else, and that artists themselves, including you both, help shape those definitions all the time, sometimes consciously and sometimes not: through their work, of course, but also through writings on personal websites, in books, and on discussion boards, by how they compare/contrast themselves to other artists and other work, and by what assignments they chose to take on (or not). And wasn't that always the case? Wasn't Macdonald 'defining' himself in Scotland's Gift and MacKenzie defining himself in the Spirit of St Andrews? In the broadest strokes, I think they were. Tom mentions GM wanting to have one paragaph definitions - that IS ludicrous. As a reader, I too dislike most of the defining I read, on whatever subject/artist; it's simply lousy work. But I continue to hope for (and occasionally find) a real expert writing about a subject with real clarity, and then it's wonderful stuff.
Peter