I don't know if I was just lucky but I also did a lot of them (where's a counter?) and had all of them right.
I think the game should try to pick answers that are closer to each other. Perhaps even have an inconsistent difficulty so some questions are easier than others.
It picks choices where the winner is about 10 times the weight of the loser. Very simple. Still trying to come up with something better that increases difficulty over time.
I think the game should try to pick answers that are closer to each other. Perhaps even have an inconsistent difficulty so some questions are easier than others.