FutureLearn uses cookies to enhance your experience of the website. All but strictly necessary cookies are currently disabled for this browser. Turn on JavaScript to exercise your cookie preferences for all non-essential cookies. You can read FutureLearn's Cookie policy here.
Get 30% off one whole year of Unlimited learning. Subscribe for just £249.99 £174.99. T&Cs apply
Scientific hypotheses must be testable: it must be possible to show that they are mistaken.
Create an account to receive our newsletter, course recommendations and promotions.