If we do not experience the difference, we do not meet. We may instead feel part of the other, or we may feel indifferent. The hallmark of contact is excitement. It accompanies the encounter in the same way the heat and light of the sun accompany each other. The relation is not causal.
Excitement is an aspect of the contact.
It implies feeling and concern, energetic response or action, perhaps pleasure, curiosity, and mobilization. It stands opposite to indifference. It is not the same as pleasure, and figure formation should not be confused with pleasure seeking. Even when enjoyment is present, it is not the point of figure formation. It surfaced once again, in the 1960s, as a popular song.