Johtuu Afrikan riskialttiista elinympäristöstä, ettei mustilla lapsilla edelleen ole vanhempia

Kärjistäen voi sanoa että USAssa valkoisten lapset syntyy avioliitossa ja mustien lapset avioliiton ulkopuolella. Suomessa pitää suunnitella talven varalle kun taas Afrikasssa kasvaa banaani puussa ympäri vuoden. Yhdistyy myös matalampaan älyyn.

It`s called a fast life history strategy. 

A fast life history strategy prioritizes earlier reproduction, higher offspring quantity, and lower investment per child in response to harsh or unpredictable environments. It produces reduced emphasis on long-term pair bonds or future planning.

These traits are adaptive when the environment signals that the future is uncertain or that survival to older ages is unlikely: reproducing sooner and producing more offspring increases the chance that at least some genes are passed on.

These are statistical tendencies shaped by evolutionary trade-offs, not moral judgments or deterministic outcomes for any individual.

Slower life histories generally co-evolve with larger brains, longer developmental periods, and greater cognitive investment.