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Evolution First term

Evolution First term - If theyresist,thenconsidered tobe...

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Unformatted text preview: If theyresist,thenconsidered tobe well supportedbut NEVERproven ż Mosthypothesistestingis attempting-to-falsify ͻ Statement... QUESTION:Give youa statement& det.whetherit can be considereda scientifictheory(i.e.ifitis falsifiable ornot.) Goodscientificstatementthatistestable &canbe falsified ż Still scientificsince falsifiable ż Tofalsify:findadifferentcolouredswan ͻ Therefore notfalsifiable therefore notscientific ż 2ndstatement:tofalsify all swans shouldbe white ͻ Is this statementfalsifiable?How? ͻ Whatabout"Some swans are notwhite"? ͻ Possible toverify. ¡ Somethinggetsintouchwithusorwe findevidence of life. ż Not realistically possible since may notknow all planets, etc. ¡ Therefore notascientificstatement. ¡ To falsify :findeveryplanet&checkit. ż Verifiable? Falsifiable? ͻ Falsifiable?No. Therefore notascientificstatement. ż "There are aliens inmy head" ͻ Doesn'tmatterif itsright,wrongor makessense. ONLY- can itbe falsified???? ¡ EŽƚ ĐŽŶƐŝĚĞƌĞĚ ƐĐŝĞŶƚŝĨŝĐ͙ǁŚLJ͍ /ƚ ĐĂŶΖƚ ďĞ ĨĂůƐŝĨŝĞĚ͊ ;¡ŽĞƐŶΖƚ ŚĂǀĞ ƚŽ ďĞ ĨĂůƐŝĨŝĞĚ͙ũƵƐƚ ŚĂƐ ƚŽ ďĞ ĂďůĞ ƚŽ ďĞ͘Ϳ ż Flyingspaghetti monster- "earthwas createdby an invisible, undetectable flyingspaghetti monster" ͻ Speciescreatedrecently, independently &don't change.- Hierarchy of org. ż Ladderof nature ż scala natura- Time... Are notrelated, created independentlyof eachother& speciesare fixed.Noevolution. Scala natura God Angels Humans Animals Plants Flame Stone Comparative anatomy revealsvestigial structures ¢ĂǀĞ ĨŝƐŚ ŚĂǀĞ ĞLJĞƐ £hdĂƌĞ ĂĐƚƵĂůůLJ ďůŝŶĚ͙ ż Pigs have 4 fingers/digits butonly 2touchground& are used.. ż Presence of atail bone - unusedbutstill have it.. ż Vestigial structures=rudimentary&serve nopurpose forthe animal ͻ Shows thatperhaps animals have evolvedfromdifferentspecies ż One of the firstassertionsthatspeciesevolve&have a commonancestry. ¡ Inheritedfromacommonancestorthathad a more functional versionof the trait. ż Why dowe have them? ͻ Smearagainstscience? ż Pooreducationontopic? ż NOTeveryone believes/agreeswith evolution. ͻ Huge variation amongcountries. ͻ Widely acceptedinscientific community. ż Mostimportanttheory in bio. = Anygoofyidea. Hasa huge amountof evidence supportingit. ͻ POPPER If the predictions are un-true thenthere has tobe a hypothetical observationthatproves thatitis wrong= falsifiabilitycriteria ͻ Fail toFALSIFY ż Nota weakness butjustthe nature of empirical science ż Noway to PROVEa hypothesis tobe correct ͻ Evolution November-09-09 10:46 AM Evolution Page 1 Statementaboutthe natural world/phenomenon- Buffon ż E.g. "all life hasevolvedfromacommonancestor"- Mechanismtoexplainthispattern- Whatsort of forcesmade life evolve fromacommon ancestor- ??(Buffondidn'thave anexplanation)- Pattern:change overtime, betteradaptedtoenvironments ż Life force thatdrivesthis Ƒ Everythingevolvingindirectionof greatercomplexity Ƒ Complexifying&adaptive forces.Complexifying&adaptive forces....
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