At the subatomic level, vulnerability might be a major and unavoidable property of the universe. In quantum mechanics, the Heisenberg vulnerability guideline places limits on how much an onlooker can at any point have any familiarity with the position and speed of a molecule. This may be obliviousness of possibly realistic realities as well as that there is not a single truth in sight. There is some contention in material science with regards to whether such vulnerability is a nal property of nature or then again assuming there are \"covered up factors" that would portray the condition of a molecule much more precisely than Heisenberg's vulnerability rule allows.[citation needed]