system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If plane wings are designed create lift in one direction, why doesn't a plane flying upside down plummet to the ground?

We are always told the shape a wing is shaped to create lift to counteract gravity, so how can those acrobatic bi-planes we see at air shows fly upside up and upside down?
gpt
While planes tend to use shaped wings to make it better to fly it's not the core of why there's lift. Lift is mainly about the angle of attack of the wing, and you can get the right angle of attack while upside down in many planes. (Doubly-so those meant to support flying upside down.)