> Or they'll let you in at entry level, maybe, and subsequently you'll start running up against an invisible barrier as you try to advance beyond the first or second layer of management. Or you will find resistance to you advancing into management at all.

I've seen this post before. (edit: no offense intended - a lot of people post the same thing on repetitive topics, your one is just a little unique)

I'm wondering how you came up with this idea. It seems ... odd but strangely credible. Is this an extension of some process which already happens?