Chapter 1 : Scientific thinking   Chap 2

scientific FALSIFIABLE coins, roulette wheel/ball. Dragonflies that cross oceans: simple observations lead to breathtaking discoveries 4:30-5:30 Maldives islands: hundreds Globe Skimmers, no fresh water
7:20 against monsoon; up in NE monsoon.
9:40 to Africa 16000 km circuit, 4 generations. Pradaxa commercial: "in a clinical trial... proven superior to warfarin at reducing the risk of stroke"
Moderate alcohol? Resveratrol.
EMPIRICAL=based on observation/experience; rational=reason/logic
observations This is already hypothesis! Observation should be plant medicines? TRIAL & error.
Bring ECHINACEA pallida/purpurea Coneflower! SEEDS sunflower. COMPASS face sun?
hypothesis or chicken soup/ginseng
predictions SAY "if ... then" hypo -> predictions What's WRONG w picture? Thermometer! Common cold run nose, cough/sneeze, NOT high fever. DoQ
experiment placebo: filler starch/lactose in tablets, 100 viruses (rhinovirus, adenovirus) cause cold
Treatments are also divided BEFORE and AFTER exposure to virus. The BEFORE also had no treatment!
controls 1 variable, e.g. cancer drug, groups should be same age.
WHY: another variable: before & after cold?
placebo: filler e.h. starch/lactose for tablets, 100 viruses (rhinovirus, adenoviruses) can cause cold
variables GASTRIC freezing: 1960's reduce acid secretion, ulcers from Helicobacter pylori
Need CONTROL group (no treatment); or larger sample: SIZE matters; e.g. males in bio class.
theory Evo JUST a theory? climate? Scientific process exercise
correlation SAY when one variable increases. Drink water before death; Sit in front of class: SUPERSTITION flu shot! SPORTS superstitions.
Graph: the proportion here is dependent variable. Or use bar graph. Rat correlation (1.3): push lever, 10 sec, backflip -> food!
life Greek homo, Latin=man. 98.6 F=37° C. Cells FLAW first cell?
===

Home
©
Copyleft Peter Chen