Without further model testing, Education's estimates may be based on unreasonable assumptions. (gao.gov)
«Studies that take into account health effects make a large number [of] unreasonable assumptions,» noted Divounguy, adding that a large number of factors determine outcomes. (energynews.us)
I suppose that you could be interpreting the photograph (on a Spanish language speaker's facebook feed) as implying that by getting this credit card you will also get a U.S. passport and cool sunglasses, but that would be a patently unreasonable assumption in this context, particularly in light of the clarifying caption at the bottom, and, of course, many people who speak Spanish as a primary language have legitimate U.S. passports (including more or less all passport holders in Puerto Rico). (law.stackexchange.com)