 Nyorera kupfuurira kweiyi ndima - Charles Darwin, achibatanidza nzira yebiogeographical yaHumboldt, geology yeuniformitarian yaLyell, zvinyorwa zvaThomas Malthus pamusoro pekukura kwevanhu, uye ruzivo rwake rwemamorphological, akagadzira dzidziso yekushanduka-shanduka yakabudirira zvikuru yakavakirwa pakusarudzwa kwechisikigo; uchapupu hwakafanana hwakaita kuti Alfred Russel Wallace asvike pakuzvimiririra pamhedziso dzakafanana. Kufarira zvakasikwa kwaiita Charles Darwin achiri muduku kwakaita kuti aite rwendo rwemakore mashanuiyo yakamuita kuti ave nyanzvi yezvokucherwa kwevhu yakakurumbira iyo zvaakacherechedza nedzidziso dzayo dzakatsigira pfungwa dzaCharles Lyell dzokuti zvinhu zvose zvinofanira kuva zvakafanana, uye kubudiswa kwebhuku rake rezvaakafamba kwakaita kuti ave munyori akakurumbira. Ashamiswa nokuparadzirwa kwaiita mhuka dzomusango uye zvisaririra zvaakaunganidza parwendo rwacho, Darwin akaongorora kushanduka-shanduka kwemarudzi uye muna 1838 akatanga dzidziso yake yokusarudzwa kwezvinhu zvakasikwa. Kunyange zvazvo akakurukura pfungwa dzake nenyanzvi dzinoverengeka dzezvinhu zvakasikwa, aida nguva yokutsvakurudza zvakadzama uye basa rake rokudzidza nezvenzvimbo raiva rokutanga. Akanga achinyora rondedzero yake muna 1858 apo Alfred Russel Wallace akamutumira rondedzero yaitsanangura pfungwa imwe cheteyo, zvichikurudzira kubudiswa kwakabatanidzwa nokukurumidza kwedzidziso dzavo dzose dziri mbiri. 