The thumb and fingers correspond to the part of the cerebrum associated with self control, language, structure, creativity and the ego. Neanderthal man had very short fingers, showing comparatively under-developed frontal lobes of the brain. Development in these areas shows more sophisticated attributes and language skills. Even 500 years ago people were generally not so well developed in these cerebral areas and had shorter fingers.
There are many variations and variables to find when interpreting somebody’s index finger. The shape, the print, any bending, the angle it’s held and of course the length are all things that can make the index finger really stand out in a hand reading. Of these variations it is the length of the finger that divides people intotwo main categories: the first being when the finger is overly long (longer than the ring finger); the second is when the finger is very short (more than half a cm shorter than the ring finger).