Quote from traderdragon2:
This is a worthless semantic argument.
Anyone who trades with the goal of making money is predicting in one way or another, there is no way around it.
They will try to deny it by using different synonyms for it, but its still predicting.
You dont have to predict direction to be predicting either. Arb traders, pair traders, trend traders, all predict in one way or another or they wouldnt be placing their bets (Assuming they are not complete idiots)
Yes, its a little like any religious argument.
Those who have a non-statistical definition of prediction (or are worried about the psychological consequence of being married to a position) say "no prediction." Those with a statistical view point say "we all predict."
To trade a system implies confidence based on the prediction that future will to some extent follow past if our testing was valid. The wise system trader will of course monitor it to see if the prediction is starting to fail.

