Evolution and Creation: Conflicting or Compatible? Patricia H. Kelley University of North Carolina Wilmington What is science? Not just collection of facts about the natural world Tightly integrated set of facts and theories Attained through “scientific method” Scientific explanations are based on natural law No supernatural explanations! Observe facts… construct hypotheses Hypothesize, predict, collect more data to test hypotheses If data don’t confirm it, the hypothesis collapses… What then? Anguished reassessment Reject hypothesis? Modify hypothesis? On the other hand… If a hypothesis survives repeated attempts to disprove it And if alternative hypotheses are rejected … The hypothesis gains the status of a theory! (Hallelujah!) The work of science is hypothesis testing To be scientific, ideas must be testable against the natural world (i.e., potentially falsifiable) Supernatural ideas can’t be tested No conceivable way to disprove theories involving the supernatural. Characteristics of Science Only natural explanations Involves scientific method Observe natural or experimental phenomena Construct hypotheses Draw predictions from hypotheses Collect data to test hypotheses Hypothesis that survives testing gains status of theory Conclusions are tentative Fact and Theory Facts = observations Theory = well-tested explanation of facts based on natural law So what is evolution? Evolution = fact. Evolution = only viable scientific theory for history of life. Evolution as fact Evolution = change in life through time Evidence = Direct observation during historic time Laboratory tests Breeding experiments Nature Evolution = change in genetic makeup of a population Breeding and hybridization experiments Evolution of new species The fossil record shows change in life through time Each layer due to a single event or episode of deposition Sediment core showing laminations of mud that settled out in quiet water Glacial deposit Marine coral reef Stream channel deposit Petrified Forest Desert dune deposit Principle of superposition Single-celled microorganisms Soft-bodied multicellular organisms Shelled invertebrates Vertebrates Human fossils only at top of sequence Second meaning of evolution Explanation for change in life through time Organisms related by descent, with modification, from common ancestors Theory (well-tested explanation of facts) Only viable scientific theory for change in life through time Cytochrome C Humans vs. Mean mutational distance Chimpanzee 0 Rhesus monkey 1 Mammals collectively 10.4 Reptiles collectively 14.5 Amphibians collectively 18.0 Fish collectively 22.5 Transitional sequences: Triceratops 45 million years earlier… Add 20 million years and a frill… 10 million years later: Monoclonius Most famous transitional fossil: Dinosaur skeleton, bird feathers Fish to amphibian transition Horse evolution: size, toes, teeth Human family tree: ancestors, cousins, dead ends Transition in hip bone structure Australopithecus jaw intermediate between apes and humans Homo habilis (“handy man”) Homo erectus You! Brain size, Australopithecus to Homo sapiens Third meaning of evolution Mechanism for descent with modification Theory still being tested Broad outline known Details still being studied Darwin’s contribution = Natural Selection Organisms vary from one to another within species Variation is inherited Organisms produce more offspring than can survive Those that do survive are best fitted to the environment. Evolution is the best scientific explanation for the history of life…. … Not a tower of speculation about to collapse! Genesis I 6th century B.C. Babylonian exile Concerned with origin of universe, earth, inhabitants Affirms monotheism, repudiates idolatry Babylonian cosmogony Tablet I – male (Apsu) and female (Tiamat) waters commingle, beget gods; day and night appear Tablets I-III – various gods begotten Tablet IV- Marduk conquers Tiamat, divides her into waters above and below Tablet V – stars, moon and sun emplaced Tablet VI – humans created from blood of Tiamat’s accomplice; temple for gods to rest Tablet VII – Marduk enthroned Genesis 2 10th century B.C. Reign of King Solomon Concerned with humans Rejects temptations to idolatry Genesis 1 and 2 differ in: Context Language (“Elohim” vs. “Yahweh”) Mode of creation Details (e.g., treatment of water) Sequence of creation Sequence of creation Genesis 1 Vegetation Sun, moon, stars Birds and fish Land animals and humans (male and female) Genesis 2 Sun, moon, stars presupposed Man Plants Animals Woman Biblical creation stories Genesis 1 – “And God said, ‘Let there be…’” Genesis 2 – Adam and Eve Proverbs – role of Wisdom in creation Job 26 – conquering of sea and Rahab Psalm 74 – crushing of dragon and Leviathan, dividing the sea Statements supporting evolution or opposing teaching of creationism: Pope John Paul II Central Conference of American Rabbis American Jewish Congress General Convention, Episcopal Church United Church of Christ United Methodist Church United Presbyterian Church USA