It would indeed. In fact, it's probably one of the better openings we could provide for our natural rivals to sue us. Encyclopedia topic selection is definitely copyrightable. And given this kind of opening, if Columbia really wanted to take Wikipedia down, they could also recruit other parties with copyright claims and front the cost of the litigation. (For example, the various copyright owners of the images we included, if we haven't screened those properly.)Auppose [the Wikipedia print edition] snagged the same 55,000 topics as Columbia? How big would the resulting text be?Wouldn't selecting the exact same 55,000 topics as Colombia be a possible copyright infringement? Choosing an appropriate selection of topics for a concise encyclopedia is a creative act...