In one earlier thread, a Doper stated that he had conditioned himself to always touch the carseat before he left the car. That sort of thing could certainly help to prevent such tragedies, but it certainly isn’t foolproof, either.
Like the article says, sometimes your brain can work against you. Our tendency to rely on routine, the mind’s ability to block out points of stress…the conscious mind just doesn’t deal correctly with that little shift, where you take the kiddo to daycare instead of your spouse, and the unthinkable happens.
Think back to your own childhood. At one time or another, before I could drive, I’ve been forgotten somewhere by every member of my family. Mom, dad, brother, everyone. Mom once drove home, a full half-hour, and had to turn around and come back to pick me up, the way she did every day, because she had just been on vacation and was out of her routine on her first day back at work. From the article, “What if that lapse in memory had happened at the beginning of the day, rather than the end?”