What is the Zeigarnik effect and how does it relate to unfinished tasks?

The Zeigarnik effect refers to the psychological phenomenon where people remember unfinished tasks better than completed ones. This was discovered by Bluma Zeigarnik, who observed that a waiter could recall orders that were not yet paid for but forgot them once they were settled. This effect suggests that our brains are wired to keep unfinished tasks active in our memory, which can lead to feelings of discomfort until those tasks are completed.