Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
The verisimilitude and motility are the two fundamental aesthetic characteristics, which distinguish the artistic forms of the action AV media from those of other medium.
The most important thing about this particular individual is that she has a relatively large pelvis compared to other individuals of the same pterosaur.
Conceptually, e-commerce does not differ from well-known commercial offerings such as banking by phone, "mail order" catalogs, or sending a purchase order to supplier via fax.
They can tell you if something is moving but they don't necessarily know if it's a human being or if it's your kids — they don't know the difference, so they will warn you all the time.
The students, who were studying artificial intelligence, were interacting with the virtual assistant and couldn't tell it apart from a real human being.