Umhlaba kuphela kwesijikelezi-langa esiqinisekileyo ukuba sinokuxhasa uhlobo lweteknoloji ehambele phambili, kodwa akuqwalaselwanga kangako kwinto yokuba, ngaphezulu kweminyaka engama-4.5 yezigidigidi, umhlaba wethu uvelise ngaphezulu kwempucuko ehambileyo.
Isazi ngemozulu uGavin Schmidt, umlawuli we-NASA's Goddard Institute for Space Study, kunye no-Adam Frank, isazinzulu kwiYunivesithi yase Rochester, bagqiba kwelokuba baphande ngale ngcinga babhala kunye inqaku ebizwa "I-hypothesis yeSilurian: ngaba kunokwenzeka ukuba ifumaneke impucuko yemizi-mveliso kwingxelo yokwakheka komhlaba?"
Igama elithi "Silurian" labolekwa kuthotho lwenzululwazi lwaseBritane "Ugqirha Ngubani", ebhekisa kugqatso oluhlala emhlabeni kwizigidi zeminyaka ngaphambi kokuvela koluntu lwethu.
Ipapashwe kwiJenali yaMazwe ngaMazwe yeAstrobiology, iphepha lichaza uhlobo lwesiginitsha ezinokuthi zishiye uhlobo lwetekhnoloji enobuchule. USchmidt noFrank basebenzise umkhondo weAnthropocene, ixesha langoku apho imisebenzi yabantu ichaphazela iinkqubo zeplanethi, ezinje ngemozulu kunye nezityalo nezilwanyana, njengesikhokelo kwinto esinokuyilindela kolunye uhlobo lwempucuko.
Kufanelekile ukukhumbula ukuba naziphi na izinto ezinkulu ezityhilekayo akunakulindeleka ukuba zigcinwe zigcinwe ngaphezulu kweshumi leminyaka yeminyaka yomsebenzi wejoloji, oku kusebenza kokubini kwimpucuko yoluntu nakubo nabaphi na abaphambili be "Silurian" eMhlabeni.
Endaweni yoko, uSchmidt noFrank bacebisa ukuba kukhangelwe iimpawu ezifihlakeleyo, ezinje ngemveliso yokusetyenziswa kwezibaso, iziganeko zokupheliswa kobuninzi, ungcoliseko lweplastiki, izinto zokwenziwa, ukuphazanyiswa kwentlenge yophuhliso lwezolimo okanye ukugawulwa kwamahlathi kunye neesotopu ezinemitha enokubangelwa kukuncitshiswa kwenyukliya. .
"Ngokwenyani kufuneka ungene kwiindawo ezahlukeneyo uze uqokelele oko ukubonayo," utshilo uSmmidt. “Ibandakanya ikhemistri, intlenge, ijiology nazo zonke ezinye izinto. Inomdla ngokwenene ”, wongezelela.
Ukulingana kukaDrake
Inqaku lesayensi linxibelelanisa i-hypothesis yeSilurian kunye Ukulingana kukaDrake, eyindlela enokwenzeka yokuqikelela inani lempucuko ekrelekrele eMilky Way, ephuhliswe sisazi ngeenkwenkwezi esidumileyo uFrank Drake ngo-1961.
Enye yezinto eziphambili kwi-equation lixesha apho impucuko iyakwazi ukuhambisa imiqondiso ebonakalayo. Isizathu esicetywayo sokungakwazi ukudibana nolunye uhlobo lwendalo kukuba eli xesha lingaguquguquki lingaba lifutshane kakhulu, nokuba kungenxa yokuba inkqubela phambili kwezobuchwephesha izenzakalisa okanye ngenxa yokuba befunda ukuhlala ngokuzinzileyo kwilizwe labo lasekhaya.
Ngokuka-Schmidt, kunokwenzeka ukuba ixesha elibonakalayo lempucuko lifutshane kakhulu kunelona xesha lide, kuba thina, ubuntu, asinakuhlala ixesha elide ngokwenza iintlobo zezinto esizenzayo. Siyayeka ngenxa yokuba sikrunekile okanye sifunde ukungayenzi.
Ngapha koko, ukuqhushumba kwemisebenzi, inkunkuma kunye nezixa ezikhulu zeetraki, enyanisweni, lixesha elifutshane kakhulu. Mhlawumbi yenzekile izihlandlo eziphindwe ngewaka lezigidi kwi-Universe, kodwa ukuba ihlala iminyaka engama-200 ngalo lonke ixesha, ngekhe siyigcine.
I-Silurian Hypothesis
Ingcinga efanayo iyinyani kuyo nayiphi na impucuko yangaphambili eyayinokubonakala eMhlabeni, kuphela ukuwa kube ngamanxuwa okanye ukunciphisa imisebenzi ebeka esichengeni ubomi bayo obuluncedo. Ngokuqinisekileyo zikho ezinye zezifundo ezingacacanga ezinokufunyanwa ngabantu kule ndlela ibifileyo, yiyo leyo, emva kwayo yonke, inguqulelo yemizi-mveliso yenguqu yakudala yendaleko: lungisa okanye ufe.
Le, kaSchmidt noFrank, yenye yeengqungquthela eziphambili zeSilurian hypothesis. Ukuba sinokubonisa ukubanakho kwethu ukuba asizizo iiTerrans zokuqala ukuvelisa inkqubela phambili kwezobuchwephesha, mhlawumbi singakubona ngcono imeko yethu yangoku
"Umbono ngendawo yethu kwindalo iphela ibikukuqhubeka kokuziqhelanisa nesifundo," Utshilo uSchmidt, ecaphula iinkolelo eziphelelwe lixesha, ezinje ngemodeli yokuma komhlaba kwindalo iphela. "Kufana nokurhoxa ngokuthe ngcembe kwimbono yokuzingca, kwaye ingcamango yeSilurian yenye yeendlela ezongezelelweyo zokwenza oko."
"Kufuneka sizimisele kwaye sivuleleke kuzo zonke iintlobo zamathuba, ukuba siyabona ukuba uMhlaba usinika ntoni na," Wagqiba uSchmidt.
