The claim is that folks are nothing more than "a derivation of their previous person states", and that correspondingly there is little to nothing a person can choose to do to escape the path set for them by their start state. I personally think this is blatantly false, and I have many observations to support my position.
FFS that's an unbelievably bad interpretation. Are you just trolling or you really can't see the difference between that interpretation and "what we become depends in great part on where we're starting from"??
If you don't disagree with my criticism of the comment I replied to, you've certainly picked an odd way to express that.
No it isn't "opportunity", there has never been as much opportunity in the world to move up the social hierarchy as it exists now.