Ads on FaceBook?
It is an Internet survey! ANYONE could have responded, and it could’ve had participants who have an axe to grind in some way.
It is about as accurate as when we FReep a poll from a thread link here.
ABSOLUTELY not scientific as polls are known, period.
What is the percentage of literacy in Mexico?
And are we expected to believe that those who left have a higher rate than those who stayed?