To me i think there are some part of the world that still don't know anything about Bitcoin, because there are people in USA, UK, Australia, Canada, China,etc. even in Nigeria there are people that don't know anything about Bitcoin, they always think that Bitcoin is a scam, but people that know about it are making thousand of Dollars,($) I think they don't know that we are in a digital world now.
Bitcoin has already gain a widespread adoption, the publicity and the awareness of Bitcoin existence can no longer be overemphasize as even most country has adopted as a currency, a golden fish don't have a hidden places, majority are only being indicisive as regards to the true potential Bitcoin holds the reason why they procrastinate using it as a means of investment but a lot are going to regret not to have investmented already those that started in the most earliest age of Bitcoin will testify.