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 ::::There are several problems with a 95% solution based on our existing categories. One is the idea that a 95% solution would be acceptable either to us or our critics. Considering our categorisation backlog on Commons the other 5% is rather more than 95% of the work in such an approach, and any approach that made use of our categories would have to answer the awkward question of how you implement it without putting obligations on either our uploaders or our categorisers. A second problem is the issue of where you draw the line between hardcore and softcore pornography. The easy bit is saying that various images that would be considered hardcore by most US and UK standards are hardcore, the difficult thing would be to set the boundary between softcore and hardcore in a way that makes sense to editors from Milan, Mumbai and Medina. If we were just catering for a North American or even First World market than an image filter would be difficult and complex; But we aim to serve the whole world and that means we can't simply impose one culture's filter on everyone. This is a complex problem and if we decide to tackle it we need a complex solution that seems simple to its users but handles the complexity of a world where some regard a woman's face as taboo, some are shocked by breasts and others will accept penises if flaccid. ''Chequers''     
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