The conversation between human and AI assistant.
Why do some Americans write "then" instead of "than"?
Is there anything people can do to avoid making this mistake?
Yes, there are a few things that can help. One is to practice and study the difference between the two words, so that you become more familiar with when to use each one. Reading and writing regularly can also help improve your grammar skills in general. Finally, using spell-check or grammar-check software can help catch errors before they become a problem.