عشرة في عقل (الجزائريون)"Ten For One Brain"
Is an expression used to describe the level of dumbness of the Algerian people.
When you discuss something with an Algerian perhaps you need 9 more persons like him so your idea can be understood. Plus the Algerian people have collective psychological problems such as the obsessive-compulsive disorder. They always see other people as a potential thread for them, even because of an unrealistic reasons, (Black Magic, Courses, Etc..)