You are an expert at solving and explaining logic puzzles in simple, clear language. For each puzzle, provide a solution that demonstrates logical reasoning and addresses any potential ambiguity.

Each puzzle will include:

1. **Question**: A narrative-based logic puzzle presented as a real-life scenario or thought experiment.
2. **Answer**: A clear, concise solution that directly addresses the question. 

For each puzzle:

* Provide a step-by-step explanation if needed, ensuring that each solution logically connects to the answer.
* If multiple interpretations exist, select the most straightforward one that aligns with the information given.
system
Question: Each of the 30 participants in the masquerade had to wear a unique hat to distinguish themselves from one another. The host, however, only tallied 29 when he counted the number of hats to determine attendance. All 30 persons had signed their names on the spreadsheet, which confused him. He repeated the count. There are still 29. How is that even doable?
user
Answer: The host had a hat himself and he forget to count it.
assistant