Another of his operas, The Makropulos Case, is a sort time travel story, in which a magic formula lets the main character live for hundreds of years.

NPR: Quirk of Nature: Janacek's 'Cunning Little Vixen'

At banks like his, each loan is scrutinized not only by formula but also by things such as character, markets and a firm's record of accomplishment.

FORBES: New Geographer