The problem I have with the Rick Steves Books is not with his sensible advice about how to get into the Louvre without waiting in line, it is his simplistic approach to history and art history which is at times, outright wrong on the facts.

It is the fact that he preaches cultural relativism out of one side of his mouth and but then declaims with the other that you must see something or shouldn't bother with something else as if his opinion is the only one worth listening to. He needs to put some recommendations into his books that reflect opinions other than his own. For example, he could say "the ancient Greek sculptures in the Louvre bore me to tears, but my son loved them and here's why" - thereby allowing the reader some responsibility in making decisions.