i'm surprised you brought up atheism... and atheists being 'afraid', when in fact whenever a scientific discovery/idea is born it is always the religious folks (church) who's the first to call bollocks even without reading into it
it's a cheap shot, but you've gotta admit you delivered it first

kita kan lagi ngomongin sains evolusi, and again, steril dari teologi/agama/keyakinan... sebelum lanjut, ini ground rule yang kita kudu sepakat dulu

ya memang dalam sains ada banyak, what you may call 'guess work' or 'theories', tapi evolusi bukan sekedar teori, tapi juga fakta
evolusi fakta, dan diakui ilmuwan, baik atheis, kristen, dsb.. it's embraced, just as gravity, and our universe revolves around the sun (a fact that, may i remind you, the church once staunchly denied).. evolution happens, fossils proved it, geography proves it, lab work proves it

it's also a 'theory' in the sense that it's also still in the work. the idea, the knowledge is, for lack of better word, evolving. pendapat seorang ilmuwan bisa disangkal, di improve, ato didukung oleh ilmuwan lain pakai bukti/temuan lain, karena itu emang kerjanya science, proving with evidence. banyak yang sering refer ke darwin, cari sanggahan dari teori nya darwin buat disprove evolution altogether.. it doesn't work that way, teori evolusi udah berkembang banyak semenjak pertama kali dicetuskan di era nya darwin.