to err is human
Everyone makes mistakes.
verb
To make a mistake.
He erred in his calculations, and made many mistakes.
Artificial tests, then, can hardly err on the side of supplying too many opportunities for one bird to see another perform the act which is the model.
To sin.
To err is human, to forgive, divine.
to stray.
intj
Elongated form of er (“sound of hesitation”).
Err... what did you just say?