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 alter-

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nately 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.