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Wouldn't it be unsettling for a child to hear the uncertainty with which parents discuss the issues pertaining to that child? Isn't it better, in other words, to provide children with assurance that mom and dad know what they are doing?

As with truth telling, being transparent when discussing issues pertaining to a child will need to be done carefully. Kids tend to be much more capable of handling uncertainty than we think, but it is usually wise to be cautious. Big, scary topics that rattle even the parents (should we change the child's school, can we afford orthodontia or will Grandma come live with us) are probably best discussed out of earshot. But when children are exposed to a pattern of lively and passionate discussions about tricky issues, they tend to trust more in their parents because they have witnessed the thought and courage that goes into making big, life decisions.