I know what you're thinking!

The website 20Q is very interesting and uses artificial intelligence technology. The site claims that there's an 80% probability it can guess the object you're thinking of within 20 questions, and if it asks 25 questions, the chance of guessing correctly reaches 98%! Of course, there are times when it can't guess, like when I used "stinky tofu," haha. However, AI is learning-based, so if it encounters something it hasn't guessed before, it will categorize the question answers for future reference, allowing it to recognize similar objects next time. The Discovery Channel has introduced many such expert systems, which are quite basic but indeed effective.