In the original Dead Space and the spinoffs from that time it's said that the Black Marker was found and Unitology was founded about 200 years ago. (Unitology article, Deakin Abbott's speech)
But in and around DS2 and DS3 every information we get suggests about 300 years.
Even the wikia seems contradictory in this point.
Is there anything I am missing or did the creators forget to consider that detail?
And is this question actually already answered by the fanbase or hasn't anybody really thought of that until now?