About how long ago was the most recent day on which a human did not die
Upvote:0
Never, because there was always a population of human ancestors. You can try to pinpoint an exact moment to call them human (i wouldn't bother) but whenever you choose, there will always be enough that someone died.
Upvote:5
You would probably have to go way back into pre-history.
If we assume average life expectancy of early man to be 20 years, and allow one death per day, the population could be as low as 7,300. Mind you, this is an average and it would only take one person to be early/late to have two deaths one day and no deaths on the day before/after. Let's say we need 73,000 people to ensure at least one death per day.
Scholars believe that around the time of the speciation of Homo Sapiens (130,000 years ago), there was already an effective population of about 10,000 to 30,000 (which gives a "census" or actual population size of between 100,000 to 300,000 - which is already at the limit).
So - there has likely not been a day for 130,000 years where a human has not died (and it could be argued that there has never been such a day, since there were no "humans" before speciation).
Note: there is postulation of a bottleneck about 70,000 years ago where the population of Homo Sapiens dropped to 10,000 or less, but this is currently disputed - mainly because of the difference between "effective" and "census" populations. "Effective" population includes all members who successfully reproduced: however not all population members do reproduce.
More post
- 📝 What does this sentence from the Romance of the Three Kingdoms mean?
- 📝 During World War II, did the Luftwaffe try to bomb 10 Downing Street?
- 📝 What was the point of hanging in “hanging, drawing, and quartering”?
- 📝 Why didn't the discrepancy in the Kursk casualty ratio work against the Soviets?
- 📝 How formalised were the various tiers of Russian nobility during the regency of Sophia Alekseyevna?
- 📝 What Were the Types of Sieges?
- 📝 Did an Irishman talk a German unit out of a bridge in World War 2?
- 📝 Did Chinese Hundred Schools of Thought influence Ancient Greek Philosophy?
- 📝 How did slavery become permissible in the French West Indies when it was forbidden in France?
- 📝 In a challenge to duel, what happened if a thrown gauntlet (and later, glove) was refused?
- 📝 Is the 1918 flu pandemic responsible for the majority of Iranian casualties during the first world war?
- 📝 Did William Shakespeare ever visit Venice, Verona and/or Rome?
- 📝 Why didn't Imperial Japan attack the Soviet Union during World War 2?
- 📝 Was reincarnation part of the early Christian church?
- 📝 Was Christianity always the #1 religion since it started, or were there others?
- 📝 How were laws promulgated in the Middle Ages?
- 📝 Was Kandhar/Gandhar renamed Afghanistan?
- 📝 Who said "Lafayette we are here!"?
- 📝 What does the following picture represent in historical context?
- 📝 Did Germany perceive Italy as a good partner in the Triple Alliance?
- 📝 What was the first emergency management agency in the world?
- 📝 Who were the Wright brothers' competitors?
- 📝 How did pastoral nomads keep winning battles/wars? When did the tide turn against them for settled societies?
- 📝 Is there any chronology of the repartition of productive capital since -1000 B.C?
- 📝 Did the USSR use trotskyism as a bogeyman in the post Stalin period?
- 📝 History of nations - books
- 📝 What was the strategy to protect the British Museum during the World Wars?
- 📝 Did John Wesley pray because he had not been persecuted in three days?
- 📝 What is this strange symbol painted on bas*m*nt floor?
- 📝 Has mercantilism ever been successful?
Source: stackoverflow.com
Search Posts
Related post
- 📝 About how long ago was the most recent day on which a human did not die
- 📝 How can we be sure what the first day of the month was 2000 years ago and how can we determine which years were leap years?
- 📝 How long ago was the yo-yo first used as a weapon?
- 📝 How come the British did not notify the Poles about the Molotov-Ribbentrop secret protocol?
- 📝 How did knights in full suits of armor eventually die in combat? What were the most common causes of death for soldiers in full-body plate armor?
- 📝 How long did Jews in hiding take to reveal themselves at the end of WW2? What was their reception?
- 📝 How did pirates back in the day not get killed themselves when they attacked ships?
- 📝 Why did archery not make a comeback when armor was phased out in the 18th century?
- 📝 How did the authorities not find the speakeasy clubs during the prohibition?
- 📝 How serious was Fermat's statement about the ancients?
- 📝 Which battle was the most lopsided result in terms of casualties?
- 📝 Why was PTSD not written about as much before the 20th century?
- 📝 How long did it take for a diplomat to travel between Berlin and Vienna in the 1770's?
- 📝 How did the monks whose job was to copy books react to Gutenberg's printing press?
- 📝 What was the most recent country to be conquered and disappear?
- 📝 How long did it take to get news of the sighting of the Spanish Armada from Land’s End to London?
- 📝 Before the Land Bridge Theory, how was human presence in the Americas explained?
- 📝 Who was the last US president who did not start a war?
- 📝 How long did it take for a letter to arrive in England in the 1830s?
- 📝 If salt was scarce and expensive, how did people "salt the earth" to ensure their enemies would stay defeated?
- 📝 How long did it take to build siege engines in the middle ages?
- 📝 Which state capital did the Apollo 11 command module NOT visit after it returned from the moon?
- 📝 Which European countries did not have a revolution in the aftermath of the French Revolution and why?
- 📝 Which specific day of 1964 was the tree Prometheus (WPN-114) cut down?
- 📝 How did corn become the most produced crop in the world?
- 📝 Before entering WW II, why was the US so against Japanese aggression in China but did nothing about Germany in Europe?
- 📝 Why did Japan not withdraw from China as its pacific front was crumbling and the threat of US invasion imminent?
- 📝 How long was a journey "from the Varangians to the Greeks?"
- 📝 How was the current month and day disseminated to the townspeople of Medieval Europe?
- 📝 How did slavery become permissible in the French West Indies when it was forbidden in France?