The phrase "social mobility" has appeared on a couple of threads recently. But what does it actually mean? Is it just code for how much money you earn? Or perhaps for the extent of your possessions (including a house) and your debts (or lack thereof). Or does it include who your friends are, how often you see them, how well educated you are, how many books you have in the house, how many languages you speak intelligibly, how international your views are, which newspapers you read...? Cheers, R.