"Is requiring print resources a sacred cow that needs to be put out to pasture?" asks Dough Johnson. Yes it is, I would argue, which is why Wikipedia's recent elevation to prominence of print sources is so ridiculous. But do I agree with Tom Hoffman that we should "add the requirement that each citation include a sentence that argues for the authority of the source?" Well, yes - if you are citing the source as an authority. But I should say, this is a practice I discourage - the nature of the content itself should be its own authority; something does not become 'more true' if it's spoken by the right person.