although the comparisons between otto and inga may seem distant when judging the power of extended cognition, clark attempts to gap a more similar comparison between the two by claiming that if otto were to lose his notebook it would be the same as inga losing a thought from her consciousness. he also suggests the concept of otto's notebook being an extension of himself, having it take on a more material role suggesting that it may be equal to the way one treats a physical appendage to their body. the notebook in a way becomes a "fragile biological limb or organ" one that otto may feel to protect from harm's way.