The implementation of the installation depends wholly on local factors and we come up with the ideas on our first site visit. When we visit a park, for instance, we look at every single tree and ask whether it is knotted or slim, crooked, dainty, or strong? Does a particular tree stand alone, in a group, or in a row? How does the light shine through its foliage? After these considerations, we decide how and where the fog should be emitted.