I think they’re using it in the context of what you’ll get without some degree of locking, which is data corruption and/or other issues. It’s not that you need

I think they’re using it in the context of what you’ll get without some degree of locking, which is data corruption and/or other issues. It’s not that you need locking to use threads. You need locking to stop threads from ruining any shared resource/data they are both trying to touch at the same time.