The levers are very different: Different shapes, different colors, different heights, different operations (squeeze latch under the handle vs lift the full handle).
However, we need to understand 2 different kinds of brain fart: Bad aim (you aim for the right stuff but you miss) vs aiming for the wrong thing.
The features I mentioned above are very powerful to stop the first kind. If your brain is looking to lift a flap-shaped handle and your hand touches 2 square knobs with latches underneath your brain will jump at once. But if the flying pilot says "flaps 30" and the copilot's brain says "where are my square levers with the squeeze latches underneath", it will never detect the mistake. At least not initially. If the airplane's (or car, or boat) reaction is crisp and clear, at that point the pilot may connect the dots and see if it is because the thing he just did, and then realize.
When a 747 took off, the PM called "positive climb" and the PF called "gear up", all the difference in the world didn't stop the the PM from grabbing a flap-shaped handle and moving it forward, instead of garbing a round handle on the instrument panel, miles away from the correct one, and moving it up. It took the stickshaker to activate for the PM to say WTF and check what he had just did, discover his mistake in horror, and correct it, all the while the PF masterfully treaded the needle by lowering the nose just enough to prevent the stall and prevent contacting the ground at the same time, managing to keep the AOA at the onset of the stickshaker.
However, we need to understand 2 different kinds of brain fart: Bad aim (you aim for the right stuff but you miss) vs aiming for the wrong thing.
The features I mentioned above are very powerful to stop the first kind. If your brain is looking to lift a flap-shaped handle and your hand touches 2 square knobs with latches underneath your brain will jump at once. But if the flying pilot says "flaps 30" and the copilot's brain says "where are my square levers with the squeeze latches underneath", it will never detect the mistake. At least not initially. If the airplane's (or car, or boat) reaction is crisp and clear, at that point the pilot may connect the dots and see if it is because the thing he just did, and then realize.
When a 747 took off, the PM called "positive climb" and the PF called "gear up", all the difference in the world didn't stop the the PM from grabbing a flap-shaped handle and moving it forward, instead of garbing a round handle on the instrument panel, miles away from the correct one, and moving it up. It took the stickshaker to activate for the PM to say WTF and check what he had just did, discover his mistake in horror, and correct it, all the while the PF masterfully treaded the needle by lowering the nose just enough to prevent the stall and prevent contacting the ground at the same time, managing to keep the AOA at the onset of the stickshaker.
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