The point is to train from the start those impulse combinations which can slowly lead to the quickest and best work.  The usual method is the opposite.  Generally the beginner learns to produce from the beginning work which is as good and correct as possible.  In order to produce such qualitatively good results at an early stage, it is left to him to choose any groups of movements which happen to be convenient to him.  Then these become habitual, and as soon as he tries to go on to quicker work, these chance habits hinder him in his progress.  The movements which may be best suited for fair production by a beginner may be entirely unsuited for really quick work, such as would be expected from an experienced man.  The laborer must replace the first habits which he has learned by a new set, instead of starting in the first place with motions which can be continued until the highest point of efficiency has been reached, even if this involves rather a poor showing at the beginning.  A final maximum rapidity must be secured from the start by the choice of those motions which have been standardized by careful experiments.

It is also psychophysically important to demand that the movements shall not be suddenly stopped, if that can be avoided.  Any interruption of a movement presupposes a special effort of the will which absorbs energy, and after the interruption a new start must be made of which the same is true.  On the other hand, if chains of movements become habitual, the psychophysical effort will be reduced to the minimum, inasmuch as each movement finds its natural end and is not artificially interrupted by will, and at the same time each movement itself becomes a stimulus for the next movement by its accompanying sensations.  The traditional method, for instance, demands that a brick be lifted with one hand and a trowel with mortar by the other hand.  After that the lifting movement is interrupted, the brick comes to rest in the hand of the mason until the mortar has been spread on and the place prepared for the new brick.  Then only begins a new action with the brick.  This method was fundamentally changed.  The laborers learned to swing the brick with one hand from the pack to the wall and at the same time to distribute the mortar over the next brick with the other hand.  This whole complex movement is of course more difficult and demands a somewhat longer period of learning, but as soon as it is learned an extreme saving of psychophysical energy and a correspondingly great economic gain is secured.  The newly trained masons are not even allowed to gather up with the trowel any mortar which falls to the floor, because it was found that the loss of mortar is economically less important than the waste of psychophysical energy in bending down.