The article compares AI to a horse, highlighting its strengths and weaknesses, such as being faster than human feet but slower and less reliable than a train, and requiring constant guidance and maintenance. The author notes that AI is not a straightforward solution, but rather a tool that needs to be carefully managed and directed. The comparison is meant to illustrate the limitations and challenges of working with AI. The article also touches on the idea that AI is not a replacement for human intelligence, but rather a complementary tool.