How, indeed, should it come about that this particular logical relation, as soon as it is perceived, contracts, expands and shakes our limbs, whilst all other relations leave the body unaffected?

事实上，这种特殊的逻辑关系一旦被感知到，就会收缩、扩张和摇晃我们的四肢， 而所有其他关系却不受影响， 这是怎么回事呢？