You can't have a genuine meritocracy without equality of opportunity, a child from a stable wealthy family who attends a good school should do well, now take that same child and place him in a impoverished broken home and a bad school, it's very unlikely he'll do as well no matter how hard he tries. The point of meritocracy is to make sure that those who seek office have the basic knowledge of how to do their job. It has nothing to do with the education system or wealth. Keeping idiots out of office would prevent political puppetry.