 Historically, though, there are at least three problems that cause trouble for Local Reductionists. First, opponents have objected to Local Reductionism on the grounds that it problematically excludes young children (e.g., 3-year-olds) from justifiably accepting what their parents tell them. For if Local Reductionism is true, then in order to be justified in accepting a parent’s testimony, a young child would need non-testimonially based reasons for thinking that this parent is a reliable testifier. But youngsters simply lack the worldly experience to have good reasons for thinking that their parents’ reports are usually true, i.e., they have not been around long enough to have confirmed enough of these reports for themselves. Thus, Local Reductionism problematically precludes young children from being able to learn from the say-so of their parents. See, e.g., Audi (1997), and see also Harris (2002), Harris and Corriveau (2011) and Koenig and Harris (2007) for empirical results about children accepting the testimony of others. (Note: This objection poses a worry for Global Reductionists as well).