I don't have an example on hand but it happens very regularly that GiB responds to Blackwood with two keycards and the queen when it doesn't have the Queen. I appreciate I have never had to write code for Bridge playing bot which uses sims to work out likely outcomes but along with counting points accurately (for NT) and counting keycards accurately one would think knowing whether you have the Queen or not is fairly simple code. I know more often than not the person asking has it if GiB doesn't but its highly amusing. As are cue bids showing Aces or Kings sitting in your hand

Is there some reason for inaccurate answers in Blackwood? Do sims suggest that its a better bid? Does it not want you to stop in 5 perhaps?
P