But this information might change participators' choices again, how should we adjust our strategy according to this kind of information?
Never mind predictions and speculations. Predictions will stay predictions, so is speculations.
The market is volatile and most predictions are bound not to happen no matter how good it was backed up. Predictions are not meant to follow but it just giving us some previews and insights on what will happen in the given timeframe.
You have your own strategy so trust yours.