One of the hidden glories of Victorian engineering is proper drains. Isolating a city’s effluent and shipping it away in underground sewers has probably saved more lives than any medical procedure except vaccination.

At Khenchela, Ben Boulaid's men showed similar precipitateness.

The baby in the top panel looks a lot at the stimulus at first and then rapidly and consistently declines in looking to habituate; this baby exemplifies a rapid habituator who shows a linear, or exponential, decrease in looking.

Some of my colleagues spend their lives working out tiny nuances in the shelfmarks, classifying, numbering, declassifying, denumbering.