That’s a crude example. Actual lift is generated by increasing the speed of the airflow over the upper surface in relation to the lower surface, usually by increasing the chord so that the distance travelled by the airflow over the upper surface is greater than the lower surface, which increases the speed of the upper airflow, thus deceasing the pressure a la Bernoulli’s Principle, and off you go.
That’s a crude example. Actual lift is generated by increasing the speed of the airflow over the upper surface in relation to the lower surface, usually by increasing the chord so that the distance travelled by the airflow over the upper surface is greater than the lower surface, which increases the speed of the upper airflow, thus deceasing the pressure a la Bernoulli’s Principle, and off you go.
Anyway, a canard is a lifting surface.