It would be easy now to describe language-games in such expressions as “in five minutes”, “half an hour ago”.
56).   Let us now have the case of a description of the future, a forecast. One might, e.g., awaken the tension of expectation in a child by keeping his attention for a considerable time on some traffic lights changing their colour periodically. We also have a red, a green, and a yellow disc before us and alternately
48.
point to one of these discs by way of forecasting the colour which will appear next. It is easy to imagine further developements of this game.