Earlier quoted context omitted.
In the case of the letter author, I suspect the problem isn't just that stillbirths are rare, but that you can't really monetize a stillbirth. Better to assume the baby was born successfully than miss out on the opportunity to advertise to a new mom. I'm sure no one in the room of marketing execs has considered personal consequences like this one. This type of thing is why I do my best to enable privacy settings and…
> but that you can't really monetize a stillbirth Serving up ads that are guaranteed to not apply are a negative because it means you're giving up the opportunity to serve up ads that might actually make money.
Is FB or Google going to change this to improve their conversion rate by ~1%? Probably not, 1% is not a lot. In the end, as long as the advertising platform gets a decent conversion rate on 'Just had a baby' for the advertisers, everyone is happy.
Heck, advertisers might prefer 10% accuracy and 90% recall over 50% accuracy and 80% recall. If pushing that recall up a bit yields a few more customers, the extra cost of showing that to a lot more non-viable people might just work out.