What stops the doubt of the First Meditation? What kind of reasoning supports the cogito?

What are operationism and positivism? How did they influence the transition of psychology from the functionalist to the behaviourist era?
September 12, 2019
Explain (1) the process by which Descartes uses skepticism to refute skepticism, and (2) what first principle does this lead him to?
September 12, 2019

What stops the doubt of the First Meditation? What kind of reasoning supports the cogito?

Question Description

1. What stops the doubt of the First Meditation? What kind of reasoning supports the cogito?

2. What does the Wax Argument show? What is it meant to show? Does it succeed?