Looking at the psutil's implementation of Process.children(), I see the following code:

# if child happens to be older than its parent
# (self) it means child's PID has been reused
intime = self.create_time() <= child.create_time()
if intime:
    ret.append(child)
    stack.append(child_pid)

What's the logic behind this code? Isn't it the case that if the child's PID is reused by some process, then this process should've been created later than the original child, which implies that its create_time would be bigger anyway?