Sentence number two: “The scientific method involves careful observation coupled with rigorous scepticism, because cognitive assumptions can distort the interpretation of the observation”
What are you trying to proof? What argument are you trying to win?
Yes, if you take that sentence completely out of context from the rest of the sentences in that summary, you don’t need anything like testable hypotheses and falsifiable theories. But you do if you want to do science.
That is a strange response to finding out you’re not understanding the basic concept of the scientific method wherein a hypothesis has to be testable and a theory falsifiable is the cornerstone of modern science.