Well, yes, but predicting a river or a human on a 1-month time scale would be useful in many cases, but the human would be much more likely to diverge in an unp

Well, yes, but predicting a river or a human on a 1-month time scale would be useful in many cases, but the human would be much more likely to diverge in an unpredictable way during that time. Possibly a river could do a few things, and you would get a useful list from the prediction, but a human would probably not have a such simple list.