"This is making an implicit assumption that iPhones are symbols of wealth " It's hardly being assumed, he's comparing a map of usage with known wealthy areas a

"This is making an implicit assumption that iPhones are symbols of wealth " It's hardly being assumed, he's comparing a map of usage with known wealthy areas and drawing that as a conclusion. Further wealthy people can have and use things that are not symbols of wealth. They might prefer pepsi to coke moreso than the rest of the populace but that neither assumes or implies that pepsi is a symbol of wealth.