That's not the only thing wrong. Gemini makes a false statement in the video, serving as a great demonstration of how these models still outright lie so frequently, so casually, and so convincingly that you won't notice, even if you have a whole team of researchers and video editors reviewing the output.
It's the single biggest problem with LLMs and Gemini isn't solving it. You simply can't rely on them when correctness is important. Even when the model has the knowledge it would need to answer correctly, as in this case, it will still lie.
The false statement is after it says the duck floats, it continues "It is made of a material that is less dense than water." This is false; "rubber" ducks are made of vinyl polymers which are more dense than water. It floats because the hollow shape contains air, of course.
It's the single biggest problem with LLMs and Gemini isn't solving it. You simply can't rely on them when correctness is important. Even when the model has the knowledge it would need to answer correctly, as in this case, it will still lie.
The false statement is after it says the duck floats, it continues "It is made of a material that is less dense than water." This is false; "rubber" ducks are made of vinyl polymers which are more dense than water. It floats because the hollow shape contains air, of course.