"Why should I worry about it? He won't remember anyway."I've heard a version of this for everything from justifying a less-than-optimal exposure (to tv, bad language, etc) to sabotaging a budding infant-caregiver relationship before it has a chance to bloom. And that's just from parents. Healthcare providers use it to not feel bad about painful procedures. Policymakers use a version of this to make sense of funding daycare instead of supporting paid parental leave. And parents use it to give...