Green threads

Green threads are like imaginary friends who can do things for you while you wait for other things to happen. Normally when you want to do something, you would have to wait for it to finish before moving on to the next thing, kind of like waiting your turn in a line. But with green threads, you can imagine that your imaginary friends are helping you do multiple things at the same time instead of just waiting in line.

So, imagine that you want to paint a picture, but you also want to play with your toys at the same time. Normally, you would have to paint the picture before you can play with your toys, but with green threads, you can imagine that your imaginary friend is painting the picture for you while you play with your toys. And if your imaginary friend needs you to help with the painting, you can quickly help and then go back to playing with your toys, all while the picture is still being painted.

This is kind of like how green threads work in programming. When you write a program, there are certain things that take a long time to do, like reading files from the computer or waiting for something from the internet. Normally, the program would have to wait until these things are finished before it can move on to the next thing, kind of like waiting in line. But with green threads, the program can imagine that it has imaginary friends who are helping it do multiple things at the same time while it waits for the long things to finish.

So, green threads are a way to make programs more efficient by allowing them to work on multiple things at the same time, kind of like having imaginary friends help you get things done while you play with your toys.