But Holmes pointed to another trivial act that is now considered an unmatched lifesaver.
"Hand washing was once laughed at, too," she said during her presentation, referring to common habits that existed pre-germ theory. Since doctors started washing their hands before surgery and, more generally, since people have started washing their hands after using the toilet, stopping the spread of pathogens, countless lives have been saved worldwide.
In other words, it is possible that simple visual-spatial exercises, as exemplified by Tetris, could have a significant impact on some psychological disorders and that someday, when the mechanism is known, the current research will be recognized in hindsight as obvious.
As for whether we should, today, be equipping soldiers with Tetris games to play immediately after battle, Holmes told LiveScience, "Not until we do clinical trials first."
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