Why can science-fiction writers talk about the possible impacts of new science and technology in ways actual scientist cannot

What role should teachers play in creating tolerance environment for students?

How can behavioral science be applied in improving public health? a.by tracking a disease to determine its sourceb.by creating promotions that improve health habitscboth by tracking a disease to determine its source and by creating promotions that improve health habitsd.neither by tracking a disease to determine its source or by creating promotions that improve health habits

Which statement is most clearly objective?