There is an assertion that the child pid will be greater than the parent pid. While this is usually/often true, it isn't always true. This isn't a big deal per

There is an assertion that the child pid will be greater than the parent pid. While this is usually/often true, it isn't always true. This isn't a big deal per se but is indicative that the author has a limited understanding of the subject. Which itself isn't a big deal either, but the article would be improved by the author stating up front that they don't know the material very well and they too are learning as they go along.