Kungani ubuchopho buncipha ngobukhulu uma buqhathaniswa nesikhathi esidlule?

Kungani ubuchopho buncipha ngobukhulu uma buqhathaniswa nesikhathi esidlule?

Ukuziphendukela kwemvelo kobuchopho bomuntu sekuyisikhathi eside kubhekwa njengophawu olukhulu kakhulu lokwanda kobuhlakani bohlanga lwesintu kanye nokubusa kwayo okwalandela kweplanethi, njengoba iminyaka eyizigidi ezimbili edlule yokuguquguquka komuntu yaphawulwa ukwanda kobukhulu bobuchopho bayo. cishe izikhathi ezine.

Kodwa ubufakazi obandayo bubonisa muva nje ukuthi ubuchopho bomuntu buguquke ngendlela engalindelekile, buncipha ngobukhulu esikhathini esithile ngemva kokuphela kwenkathi yokugcina yeqhwa, kwembula ososayensi.

Ngokuphathelene nalokhu, uJeremy De Silva, uprofesa we-paleoanthropology eDartmouth College, wachaza ukuthi abantu abaningi bakholelwa ukuthi ukukhula kobuchopho kwenzeka ngendlela eqondile lapho bukhula, bube buzinza, futhi bume kamuva.” Waveza ukuthi lokhu akulona iqiniso, njengabantu. balahlekelwe izicubu zobuchopho ezilingana nosayizi kalamula owodwa.

Ukuze uthole ukuthi, iqembu labacwaningi eliholwa ngu-de Silva basebenzise ingxube yedatha ye-fossil ne-specimen yesimanje ukuze banqume ukuthi ukulahleka kwe-grey matter kwenzeka phakathi kweminyaka eyi-3000 ne-5000 edlule, ngokusho kocwaningo olwanyatheliswa ngoJuni ephephabhukwini elithi Frontiers in Ecology kanye. Ukuziphendukela kwemvelo.

Izinga lemiphakathi libe neqhaza

Izazi eziningi ze-anthropologists ekuqaleni zazicabanga ukuthi izinguquko zaqondana nokuvela kwezinqubo zezolimo eminyakeni engaba ngu-10000 edlule, kanye nokusuka emhlabeni wonke ekuzingeleni nasekubutheni.

Izinsuku zakamuva zeqembu le-DeSilva zikhomba ezikhathini ezichumayo zempucuko yasendulo eNyakatho Afrika, eMpumalanga Ephakathi, naseNingizimu Melika, imiphakathi eyinkimbinkimbi abakholelwa ukuthi ibambe iqhaza ekushwabaneni kobuchopho.

Ososayensi babike ukuthi ubuchopho bomuntu buye bahlala bulingana nobukhulu obufanayo ngokwesilinganiso, cishe ama-cubic centimitha angu-1450, phakathi neminyaka engu-150 edlule, ngokusho kwe-Wall Street Journal.

Nakuba lesi silinganiso sehle ngokushesha cishe ngo-10%, noma kufika kuma-cubic centimeter angu-150, kule minyaka eyizinkulungwane ezimbalwa ezedlule.

Kuncishiswe usayizi womuntu

Iqembu likaDeSilva lithole ukuthi akugcinanga nje ngokuba usayizi wobuchopho bomuntu bunciphe jikelele, kodwa futhi wehla uma kuqhathaniswa nosayizi womzimba, okuphakamisa ukuthi ukwehla kosayizi wobuchopho akuwona nje umkhiqizo wemizimba yethu enciphayo.

Abacwaningi baphakamise ukuthi isidingo sethu sokugcina ubuchopho obukhulu, ukugcina ithrekhi yolwazi mayelana nokudla, ubudlelwano bomphakathi, izilwane ezidla ezinye kanye nendawo yethu, kungenzeka ukuthi sehlile eminyakeni eyizinkulungwane ezimbalwa ezedlule ngoba sikwazile ukugcina ulwazi ngaphandle kwamanye amalungu. yemibuthano yethu yezenhlalo, amadolobha kanye namaqembu omphakathi.

Lo mkhuba kungenzeka futhi uqiniswe ukusetshenziswa kwethu kwamanje kwezincwadi, izinto zomuntu siqu kanye ne-inthanethi njengemithombo yolwazi efanayo, ngokusho kukaChris Stringer, isazi sesayensi yezinto eziphilayo e-Natural History Museum eLondon, noChristoph Koch, isazi sezinzwa e-Allen Institute. , isikhungo esiseSeattle.

Nakuba ukuphakama komuntu okumaphakathi kubonakala sengathi kwenyukile emakhulwini ambalwa eminyaka adlule, u-Stringer uthe uhlobo lwethu luye lwaba lufushane ngokuphawulekayo, lulula futhi luncipha eminyakeni eyi-XNUMX edlule njengoba isimo sezulu siye safudumala, nobukhulu bobuchopho behlile ngokufanele.

“Kodwa lokho kungase kungabi indaba yonke,” ephetha.

Izibikezelo ze-horoscope zika-Maguy Farah zonyaka ka-2023