Threads are like little helpers that work together to perform a task. Think of them as a group of friends who are all trying to put a puzzle together. They all have their own job to do, but they have to work together to finish the puzzle. When they work together properly (threadsafe), the puzzle gets done quickly and everyone is happy.
But sometimes, these little helpers don't work together very well. It's like they're all trying to put the same puzzle piece in at the same time. This can cause the puzzle to not get finished or to be incorrectly put together.
In computer programming, threadsafe means that these little helpers are all working together in a safe and organized way. The tasks they're working on won't interfere with each other and everything will run smoothly. If something isn't threadsafe, then it can cause problems like errors or crashes in the program.
So basically, threadsafe is when all the little helpers (threads) are working together safely and properly to get a task done, just like a group of friends trying to put a puzzle together.