4.Why are baby so dump if humans

十个单词
species物种['spiːʃiːz; -s]
respect方面（尊敬）[rɪ'spekt]
curious古怪的['kjʊərɪəs]
cognitive 认知的['kɒɡnɪtɪv]
contradiction矛盾[kɒntrə'dɪkʃ(ə)n]
pose：提出（问题），造成，摆姿势
not nearly：远没有
incompetent无能的[ɪn'kɒmpɪt(ə)nt]
propose：建议，提出，求婚[prə'pəʊz]
其他
run scientific studies做科学研究
or, rather或者，更具体地说,
exist[ɪg'zɪst]
primate灵长类[ˈpraɪmeɪt]
giraffe长颈鹿[dʒə'rɑ:f]
grasp抓住[grɑːsp]
infant婴儿['ɪnf(ə)nt]
evolution[,evə'luːʃ(ə)n]进化
significance意义[sɪg'nɪfɪk(ə)ns]
mature成熟[mə'tʃʊə]
primate灵长类[ˈpraɪmeɪt]
trade-off制衡，取舍
argument讨论['ɑːgjʊm(ə)nt]
variable变量/多变的['veərɪəb(ə)l]
supplement补充['sʌplɪm(ə)nt]
supplant取代[sə'plɑːnt]
ongoing：进行中的;
offspring：子女，后代['ɒfsprɪŋ]
orangutan：猩猩[ɔː,ræŋuː'tæn]
lemur：狐猴['li:mə]
baboon：狒狒[bə'buːn]
hypothesis：假设[haɪ'pɒθɪsɪs]
metabolic：新陈代谢的[,metə'bɒlɪk]
converging：聚集，会合[kən'və:dʒiŋ]
genetic基因的 [dʒɪ'netɪk]
likely as not说不定

We haven’t been around nearly as long as many other species, but in many respects we’ve accomplished more than any have before us.

humans are born quite helpless, far more so than any other primate, but, fairly early on, we start becoming quite smart, again far more so than any other primate.

she told me that their theory cannot offer an answer—likely as not, it’s a matter of pure genetic luck that beceme self-reinforcing.