19. Parkinson’s Law

Parkinson's law states that the most likely task takes the entire time allocated to it. If, for example, a task can be done in a few hours, but the deadline for it is several days, then the employee will do this task for several days. Besides, this law can be applied not only to deadlines, but also to user interaction with the interface. For more efficient work, you can define a specific time for the user to perform some action. For example, on the website, after adding products to the cart, the user has a limited time to complete the purchase.