There are many conflicting beliefs about what it means to be gifted. Gifted children question answers. It is a cute expression, but it does a disservice to all involved. As with any children, there are learning styles issues.
Some gifted children prefer to have explicit answers to specific questions.
Others prefer more open-ended inquiry, and will continue to chase down deeper and deeper levels of the material, neither expecting nor desiring a conclusion. For some of them, it is a matter of the subject at hand. They pursue deeply their passions while leaving the less riveting topics at a very superficial level. To lump these children together in a single pot is unfair, unwise, and unproductive. Unfortunately, this is exactly what happens in some IQ testing design and interpretation.