Because I can't just walk around and look at the exhibits."

VOA: standard.2010.07.23

I think there's the old saying, "You can't run before you walk." and I think it's basically the same thing about writing.

有句俗话叫，“你不能未立先走。”我觉得写作跟这个是一个道理。

英语阅读：技巧 - SpeakingMax英语口语达人