how did the human population grow

[Lockebox]

incest

[Ad Bot]

[#Jeetlor]

They had to do incest at the start.

[Akio-]

I would not mind getting pusillanimous individual from my sister.

[#Jeetlor]

Aren't you married or was that a joke

[WaterOre]

Lots of incest and lots of wheat.

[Toxicology]

All I know is the Jews killed Jesus

then we gotta kill the jews

[bestguy22]

i think you make babies when you have loveual intercourse.
Find out more at: Your local love Doctor

[Lego lad]

then we gotta kill the jews

someone get electrk

[Epicduke]

early primates planted human seeds and we slowly rose to dominance

[Becquerel]

incest is wincest

[Trymos]

let me put it in a way the OP can understand:

the parents forgeted eachother constantly then they forgeted their kids then their kids forgeted eachother then their kids forgeted their grandkids then their grandkids forgeted eachother then their grandkids forgeted their great grandkids then their great grandkids forgeted eachother then their great grandkids forgeted their great great grandkids then their great great grandkids forgeted eachother then their great great grandkids forgeted their great great great grandkids then their great great great grandkids forgeted eachother then...

the cycle continues to this day and you dont realize it.

[Doughboy]

we just kept taking ribs from men to make more women

[Ipquarx]

Absolutely no incest was necessary
Life started out probably as some sort of super-primitive self-replicating lifeform that eventually evolved onto land, into apes and then gradually into humans (of course i'm skipping a lot of steps here but that's all that's really necessary to explain this specific part)
at no point was incest *required*

[Jshotgun]

let me put it in a way the OP can understand:

the parents forgeted eachother constantly then they forgeted their kids then their kids forgeted eachother then their kids forgeted their grandkids then their grandkids forgeted eachother then their grandkids forgeted their great grandkids then their great grandkids forgeted eachother then their great grandkids forgeted their great great grandkids then their great great grandkids forgeted eachother then their great great grandkids forgeted their great great great grandkids then their great great great grandkids forgeted eachother then...

the cycle continues to this day and you dont realize it.

thats a lot of loving

[hillkill]

the common ancestor that humans and chimpanzees share were mutated (most likely due to a shift in location between populations) until speciation happened.