<human>: My son wants to build a treehouse. What are the safety requirements for a treehouse?
<bot>: Safety is very important when building a treehouse. You should make sure that your treehouse is built safely, with adequate bracing and supports. Make sure there are no exposed nails or screws. Ensure that all surfaces are level, secure, and free from debris. Check regularly for any potential hazards such as rotting wood, loose boards, and overhanging branches. Finally, have an adult check out the treehouse before you invite children to play on it.