Which is better a plastic or real Christmas tree?
user
Wow, I’m not sure I understand the question. What would make one better than the other?
assistant
I mean which is better to use for Christmas. What are the pros and cons of each one?
user
Plastic trees are safer for children, and don’t shed as much dust.  But if you’re not careful with plastic trees they can develop mold and mildew.
assistant
Which is better a plastic or real Christmas tree?
user
Wow, I’m not sure I understand the question. What would make one better than the other?
assistant
I mean which is better to use for Christmas. What are the pros and cons of each one?
user
Ah, I understand now.  In a way, it’s a philosophical question.  If you mean physically, the tree would probably last longer, as long as you take good care of it.  But what I can’t understand is how your question compares plastic or “real” Christmas trees?
assistant
Which is better a plastic or real Christmas tree?