I too found this a ways back. It did not have Heron of Alexandria in its data base, but it does now. It took 4 straight play-throughs of first adding it, then check marking it, but it got it by the end of the 5th. Even though it took more than the first 20 guesses.
OK 6th time, and it still guesses Archimedes or Euclid on the first 20, but he gets it now by 40. Because he was Greek, but lived in Egypt, and was linked with science, math, and inventing, it just keeps picking a more well known person.