Imagine you have two tasks you need to do, like cleaning your room and doing your homework. Normally, you would do one task at a time, finishing your homework before you start cleaning your room.
But with the parallel operator, you can do both tasks at the same time! It's like having two bodies that can work at the same time.
You start cleaning your room with one body, and doing your homework with the other body. Both tasks are happening together, so you finish both tasks faster than if you did them one after the other.
This is similar to how computer programs use the parallel operator. It allows them to run multiple tasks at the same time, making the program faster and more efficient.