They are not trying to explain scientific thought. they are trying to explain the theory they are experimenting to prove. They cover your 1st topic fine (read

They are not trying to explain scientific thought. they are trying to explain the theory they are experimenting to prove. They cover your 1st topic fine (read only 1st and 2nd links from the page. second link was the best in my humble opinion). Your other 3 topics are just required if explaining scientific thought model.