==Bad bot behavior== 
 I have been creating articles on World War I flying aces; in the process, I have been leaving the death dates vacant when unknown because that is what I had been advised. Now your bot insists there is a cohort of creaky old geezers creaking about in their 120s. I am manually correcting the problem, and burying them all. I have also decided to ignore prior advice, and add "unknown" under death date. It's going to be a long haul; I probably have a couple hundred articles out there where death date is unknown.