In the beginning is movement that comes from a need, itself being curiosity or neccessity: both presenting themselves as a need borne out of an active or passive stimulus.
Tropism can be a movement to acquire something new and previously not owned, or involuntary, a forced movement due to prevalent circumstances.
Tropisms can include remizing, translation, transcoding [as in the form art takes] pliage, bricolage, cut ups, etc.
Stimuli can come in many different shapes and forms and can be active or passive.
Tropisms can also be in the form of everyday life.
The purest stilmuli for many today is distraction: reloading of internet pages, status updates, simultaneous channels of information and communication; we do not need the face of Janus, but rather a multifaceted face of some unknown monster.
What kind of tropism is a novel in the face of such a stimulus?