You really are very silly, it is not possible to state with absolute certainty whether a child born in leafy suburbia to a well healed family this morning, will fare better than one born in less advantageous circumstances two minutes earlier, because they've yet to take their first dump, Only a study of historical data can give any indication as to what might happen to them and we need to contrast and compare what opportunities existed then and now, whether as a society right now, social class is more or less a defining factor in life chances and so on.
If, as SWP states, it's all about choices, that statement is true only if those choices are available to all people to choose, if those choices are not available to all people then the statement is eroneous, because it can't be all about choices if those choices are not there for all people.
You should be batting on my side on this, you're the prove it king.
The problem is that I read the actual study. It categorically states that the defining factor is education of the parents and not social class.
This is generally why I don't bat on your side, I don't post links to crap articles and instead read the original source material.