[Tichy]

Why is it obvious? If it was so obvious, there wouldn't be so many parents failing in it (many perhaps unwillingly).

[pavel_lishin]

And yet, if those parents read that comment, they wouldn't have an overnight change of heart.

[signal]

People fail at obvious all the time. Examples: Belief in god, Smoking, Voting conservative, Racism, Drinking and driving, Eating junk food, etc, etc