Usually with the purchase of any appliance or piece of equipment, an instructional mannual is provided to assist in operating the item correctly and efficiently. One may find that if he doesn't read and follow the instructions carefully the equipment will not function properly. His problem may be simple failure to follow the instructions. The most complicated activity we face is the living of life. Without some instructions we are bound to have trouble. What is this manual that humans will get instruction from.
the human manual comprises of our natural environment and the human brain. most importantly, the human brain is the manual that directs the affairs of a man. just like when the full potentials of an applance manual is not fully harness, the applance becomes faulty, so is the human brain, when not properly put in use, one may become a fiasco in life, or rather when one indulge in hard drugs and de brain is affected, then that leads to mental disorder, in other words the manual of such a person is damaged.