The Scientific Method:
Purpose- What do you want to learn?
Research- Find out as much as you can.
Hypothesis- Try to predict the answer to the problem. Another term for hypothesis is ‘educated guess’. This is usually stated like ” If I…(do something) then…(this will occur)
Experiment- The fun part! Design a test or procedure to confirm or disprove your hypothesis.
Analysis- Record what happened during the experiment. Also known as ‘data’.
Conclusion- Review the data and check to see if your hypothesis was correct.

The AGW Method:
Purpose: What do you want to convince people of?
Research:  Only pursue research that supports your objective by providing correlation, even if it doesn't prove causation.
Hypothesis:  Try to predict the answer to the problem.  (Models)
Experiment:  If the results don't confirm your predictions, change the data history and current sources to make the results fit the predictions.

You can't do an experiment because there are far too many variables.