GLY-1842 Lecture 3: aug 22
Document Summary
: hypothesis(es) that has withstood widespread and long term testing to the point of (near) universal acceptance . Science does not = democracy, science is self correcting. Scientific theories : gravitation, plate tectonics, thermodynamics, evolution, etc. 1) parsimony( occham"s razor) simplest explanation that fits facts is th best explanation that fits the facts. 2) consilience : favor h1(hypothesis), that is most compatible with existing knowledge. 3) proportion acceptance with evidence spectacular claims require spectacular evidence. When reading about dinosaurs ask : testable, nature of evidence, independently verifiable, peer reviewed, can we make predictions? brachiosaurus or giraffititan. Limbs situated beneath the animal, quadrupedal or bipedal. Complex defined last common ancestor and all descendants of. Saurischian: lizard hip all predatory dinosaurs, (theropods, sauropods, and prosauropods) birds have lizard hips meat eaters (theropods) sauropods (long necks) Ornithischian : bird hip stegosaurs, ankylosaurs, hadrosaurs, ceratopsians, ornithopods, iguanadontids, heterodontosaur, pachycephalosaur, (basically all nonsauropodomorph dinosaurian herbivores)
