We often think the brain just stores information like a computer, but in reality, it’s constantly forgetting things on purpose. This process is called “synaptic pruning.”
Just like trimming dead branches off a tree, your brain removes unused connections between neurons to become more efficient.
The more you use a memory or skill, the stronger the connection gets. The less you use it, the brain clears it out to make space.
This happens a lot in childhood and teenage years — it’s why kids seem to learn fast but also forget things quickly.
Why does this matter? Because forgetting is essential for learning. A cluttered brain would slow you down. So in a way, your brain is always spring cleaning to help you focus on what matter.