Rojina and Elina planned to go theater on Saturday. They promised to visit each other at 6 am in a place. But the absent minded Rojina forgot the plan. It was already 7 o'clock. She was still reading a book at home. Her brother suddenly started singing a song of the same  movie which she had planned to watch with Elina. Now she remembered the plan and ran towards the destination.

Everyone may have experienced such condition at least once in a year. What is the scientific reason behind it?

As your computer has many folders, your brain also has many folders that stores each and every  things inside it. You will remember the things forgotten exactly as you find the lost data with no expectation while searching some other things in your computer.
Discovered by +Don Prince, Founder, Editor-in-Chief