Social inclusion or social exclusion definitely should be measured.
You may be familiar with the United Nations definition of poverty, which is based on what they call a human rights definition, and it talks about being poor as being excluded from society, that social inclusion is definitely an issue. So we should be measuring social exclusion and not simply focusing on income or basic necessities.
Most of the jurisdictions in Europe that have developed comprehensive anti-poverty strategies do measure social exclusion. Ireland does, the U.K. does, and other European countries do.
The Irish situation, which you may be familiar with, has a whole list that says these are things people should be entitled to. Talking about basic necessities, we may find some of these interesting. They are a warm home, a warm coat, shoes, a roast once a week—things like that—the ability to invite friends over once a week, be able to go to a movie once a week. We might not consider these basic necessities, but what it says is, I think, if people are lacking more than two of those, then they should be considered to be socially excluded.
In other words, you look at some of the things that are common in your particular culture, and you say people should be able to have what other people have within reason. So social exclusion definitely should be measured, and I think we should take that into account along with income. It shouldn't just be deprivation.
There were years when we would have said having an outside toilet was fine, and then having an inside toilet became a necessity. I read somewhere recently that having a telephone is considered a basic necessity now, whereas it might not have been 50 years ago, and the suggestion was made in this article that eventually having connection to the Internet may be considered a basic necessity.
So this changes over time, depending on the society you live in, but we need to be giving thought to that, as the jurisdictions that are having success in anti-poverty strategies have done. They mostly have a combination of those basic necessities or social exclusion measures along with some kind of income measure too.