Can WordPress ever fail to show a post on a category archive page (e.g. "cat-food") because that post also has other categories assigned to it (e.g. health, sponsors, products etc) ?
In other word, can assigning multiple categories to a post cause "confusion" about what category it is in? (I mean outside using custom logic in PHP to pull posts by category.) Is the same true about tags when using Tag Templates? Multiple tags not likely to cause issues?