In Darwin's time all of biology was a black box: not only the cell, or the eye, or digestion, or immunity, but every biological structure and function because, ultimately, no one could explain how biological processes occurred. ↗
In the 19th century the anatomy of the eye was known in great detail and the sophisticated mechanisms it employs to deliver an accurate picture of the outside world astounded everyone who was familiar with them. ↗
The difference between the extras here and in France is the French extras read books. Actually, they hide the book and pretend that they're acting. Here, you can see everybody wants his break. ↗