Actually this topic is on my mind so I'm glad to see the discussion pop up again.
In family statistics, which I do not use, apparently "before" dates are showing that the person was born (say) between (infinity, or -6124, which is I think the earliest date in the system).
Is this a bug?
This is relevant because my practice, when there is a known baptism, is to enter the birth date as "before that date" -- Alex and I discussed this a bit recently.
So I can eliminate the faulty statistic by changing the "before" to "between.". But this is a huge effort (a lot of profiles involved) and also makes me a bit uncomfortable genealogically. In Colonial America the spread between "date of birth" & "date of baptism" could be years due to frontier life & lack of ministers. ...