One of the important points in Taiki-ken training is the disassociation of the body parts; the arms must be trained to act on their own and alone.  The same is true of the feet and legs.  
This is connected with the lack of fixed forms in Taikiken.  For instance, there are no such things as right positions or left positions in Taiki-ken.  The arms are antenna constantly sensitive to what can be done for the sake of protection.  The hips are like the earth in that they provide stability.  It is, true that sometimes we employ training in lowering and raising the hips, but this is only for the sake of developing flexibility.  There are no definite hip techniques, because a person whose body is trained and flexible can use his hips as he needs to. Generally, the steps taken in Taiki-ken are small; it has been said that among the great men of Taiki-ken there are none with wide strides.
Defense and attack constitute all of the hand work in Taiki-ken.  The two techniques for the hands are called mukae-te. and harrai-te.  In the former, one uses the inside of the arm to block the opponent's arm and to pull it inward.  In the latter, one uses the outside of the arm to parry the opponent's techniques.  It is further important to know how to move from mukae-te to harai-te.
For the sake of discussion, I assume that the word arm means everything from the shoulder to the fingertips.  When a person stands as shown in Fig. A, Taiki-ken practice assumes that the arm will move like the antenna of an insect.  Whether to defend oneself by blocking with the inner side or with the outer side of this antenna will be determined naturally when the opponent attacks.  The arm must act independently on its own; the defense involving it is not a matter of the eye or the head.  It is important to remember that, when the right hand rises or lowers, as in Fig.  A, the left hand must move with it as reinforcement (what is called soe-te).  For example, if the right hand is unsuccessful in blocking the opponent's attack, the left hand must be ready to block on its own.
Of course the entire body must respond to the motions of the arm-antenna If the arm lowers, the hips must be lowered at the same time.  If the arm advance, the hips must advance too.  Allowing the motion of the body to follow the motion of the arm, greatly increases the power of the arm.
All people who practice Taikiken must constantly keep this characteristic use of the arm in mind as they train.