In a scientific paper, yes. Elsewhere, it depends but generally that isn't needed unless we are doubting a person's claims. For example, the claim that many p

In a scientific paper, yes. Elsewhere, it depends but generally that isn't needed unless we are doubting a person's claims. For example, the claim that many people were told that a degree was a valid path to success but weren't informed their degree (and the prestige of the degree) would matter or that it was possible for it to be less of a boost than the costs incurred. Also some claims shouldn't need backing as they are common knowledge, such as the existence of diploma mills. Also, claim that people with degrees are more likely to be employed or make more money doesn't mean the degree is worth both the debt and time investment. It also talks about degrees as a whole, which people generally don't intend to target despite often using overly general speech that could give such an impression.