The image of attempting to climb two trees with one foot braces against each trunk is painfully awkward.  It obviously would be much more efficient to climb one tree at a time.  Yet I often find myself doing something similar to my mind by reading, watching TV and listening to a family member all at the same time.  My brain is able to take in all of the different inputs into short term memory, but only a few of them get thoroughly processed and retained long term.  Much of my brain...


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