i mean, it depends on the situation.  babies eventually learn that mommy and daddy pay attention when they cry, so sometimes they literally cry for no reason.  this is commonly observed when a small child has a small fall. they will sit on the ground for a moment, then mommy comes over and goes > are you okay? my sweet little delicate baby  then the child cries. this is the child being taught to cry when it falls down. it is not crying because it is hurt. in this case the child should not be comforted, but should instead be taught to get up and continue on, teaching the child it is in fact not delicate but strong and not easily damaged. this teaches resilience in more things than one might first realize.
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