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If you often find yourself forgetting that you made plans with a friend or why you needed to go to the shops, then don't be too hard on yourself - you might be smarter than you think.
New research by the University of Toronto found that being forgetful could actually be a sign of greater intelligence.
The findings suggest that your memory optimises decision making by only remembering valuable information and forgetting the unimportant details - essentially making room for what matters.