Einstein was mocked a bit for not having memorized the speed of sound, when taking the “Edison test”. He replied with, “I do not carry such information in my mind since it is readily available in books.”
It’s kind of ironic that the man who may have been the greatest mind of all time, certainly of modern history, was even being tested by the standards of a comparative idiot like Edison.
To set the record straight, few people have worked harder in their lives than Edison. He was a successful inventor because he was relentless, out-working basically every scientist and engineer of his time, not because he was exceptionally smart. He may have been even of slightly above-average intelligence, but comparing him to Einstein is like comparing a sporty version of a Toyota Corolla to an Indy car.