The United States in the 19th century the famous sewing machine inventor HeWei, long-term study design work.One night, the dream of the king issued a command to him, if you don't create a sewing machine within 24 hours, spear executed him.Then, he saw a spear slowly descended, and suddenly he was surprised to find all the spear on the spear point have eye holes.Thrilled to HeWei woke up, he realized that the sewing machine needle should be close to the tip, rather than in the middle and tail of the needle.Back to the lab, he started a new experiment, the result was successful.

According to psychologist ullman, the dream invention in four aspects:

1, the dream can conceive new things.British classic author of seabed two miles, Stevenson recalls, he dreamed about early wrote the story, he described the dream for every night on the stage for their own myths rod little person.

2, dream can make the dreamer associated with the substance.Famous physicist Bohr had such a dream, he dreamed that he stood with the heat of the sun, the planets roar from grazed beside, they seem to rely on filaments on the sun, around the sun.Bohr woke up, think of the essence of the atomic model, the nucleus as fixed in the center of the sun, and electronic like planets, turn around the center turning.

3, dream can the spread of the appearance of a new form.Pharmacologist Roy because Germany found that cardiac control affected by nerve release chemicals, and won the Nobel Prize in physiology.As early as 1903, Roy will not agree to the traditional theory of heart beat.Until 1920, in a dream to get the facts together, proved his theory.

4, creative make the dreamer of dreams feel reflect a kind of unconscious experience.Italian composer tower tiny in his sleep, suddenly produce a wonderful creative impulses, overhearing a beautiful tune, by dreams, he composed the world famous "devil's trill" sonata.

Psychologists believe that man's invention process can be divided into five stages:

1, ask questions.

2, to collect data.

3, try to design or wait.