The earthquake did not kill 4000 people; the official record about the number of people that died in the earthquake was updated in 2015, up until then it was believed to have been around 10,000 people but an official number was hard to estimate, now and according to the office of civil registry of Mexico city, we know that the official death toll was 12, 843 people. This record includes those who died in makeshift hospital camps or actual hospitals, either a few hours or a few days after the quake occurred due to the injuries they sustained. This record also includes people who were buried under the rubble for days and died of asphyxia, dehydration or other causes and of course people who died when the buildings collapsed on top of them. I don’t know, can this number be corrected at the beginning of the page where it explains what the movie is based on? Everything else is ok it just wasn’t ́t even close to 4000 people.