>> of course past information would seem "inaccurate". But it's more "out of date"...
You have a very good point there. However, they often use the attitude of, "We know WAY BETTER now. From this point on, things will be WAY X" and then suddenly they do a doubletake and change their minds.
They should act more along the lines of "We're going to experiment with WAY X for now, so expect a little change."