Ok kiddo, let me explain what the lump of labor fallacy is. Have you ever had a big bag of candy and you thought that once you finished it, there would be no more candy left in the world? Well, that's kind of how some people think about jobs. They believe that the number of jobs in the world is fixed, like a big bag of candy, and once those jobs are taken, there won't be any left for anyone else. This is what we call the "lump of labor fallacy."
But here's the thing, just like there's always more candy to be made, there are always more jobs to be created. As technology and industries change, new types of jobs are created and some old jobs may even disappear. It's like a big puzzle with new pieces being added all the time. So, don't worry too much about there not being enough jobs for you because there will always be new opportunities available.