On this, there is a huge and uncontested body of research based on hard data.
For example, our own ministry conducted a major benchmark analysis of the outcomes from the federal skilled worker program. Basically, we linked tax data—data that is generic and doesn't identify anyone's name or disclose personal identity—with immigration data. We overlaid the two sets of data one on top of the other to see when people arrived, which program they came in on, based on what points they were assessed, and how they are doing economically.
We found that those with higher levels of language proficiency did substantially better; that younger immigrants do better, because they are more adaptable over their lifetime in Canada; that obviously those with Canadian work experience do better; and that those with pre-arranged jobs, when they come to Canada, do significantly better, generating, I believe, $78,000 in average income after their third year in Canada, as opposed to about $39,000 for those arriving without jobs. These are very useful data signposts for us.
By the way, this is not just our study. It's corroborated by all of the academic work that's been done in this area, by Charles Beach at Queen's, by researchers at universities all across the country. They all say that youth, language proficiency, Canadian work experience, and pre-arranged employment are the most important factors in the economic success of newcomers.
I emphasize that this is not to say that people can't succeed without those things; many do, but statistically speaking, those are the leading factors in terms of economic success.