It seemed so good when it started.
I gave my trust to you.
I came to you open-hearted,
Hoping it was true.
Now I’ve gotten smart.
Now I’ve learned some things.
Now I know that what once was a start,
Is just an ending.
The longest good-bye
I ever knew,
The longest good-bye
Was the day
I said hello to you.

Planning. Short-term memory. Attention. At first glance, these three frontal lobe functions can seem like diverse activities that just happen to be packed into the same brain region. But on closer inspection it turns out that they are facets of the same basic phenomenon of ‘restraint’. Planning restrains our brains from wandering from a chosen path of activity. Short-term memory retrains sensory cortex from moving on to different imagery. Attention constrains the kind of sensory data admitted to sensory cortex.

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