However, Landis never realized that the compliance of his subjects was far more interesting than their facial expressions.Landis remained single-mindedly focused on his initial research topic, even though he never was able to match up emotions and expressions.Alternative: Making of a pie from scratch isn’t easy. "God eateth not his word when he hath once spoken" is the first recorded use of this expression, in a 1571 religious work.
It also has roots in the Biblical phrase, "to eat one’s own flesh", used to describe an indolent person.
It turns out that people use a wide variety of expressions to convey the same emotion — even an emotion such as disgust at having to decapitate a rat.
Below are the pictures he took of his subjects decapitating a rat.
Easy as pie (or apple pie) originated in Australia around 1920.
The Australian expression to be “pie at” or “pie on” something means to be very good at something (from the Maori word “pai” = good).