Everyone has their own belief window. Its whats there to influence your every decision and action. Its important to know what you believe because its what makes you unique. Its also what makes you have your own opinion. Your belief window is your thoughts/opinions. and it is involved in every decision you make, so who would you be without a belief window? You belief window could have been caused by anyone. When you were five or younger, if people told you things and they were serious enough about it, you would believe it. You could believe it for the rest of you life. Because our belief window helps us with our opinions, it could lead to bad actions towards others.