to run before somebody can walk
01
to make an attempt to do something difficult without having the requirements or means to do so
![to [run] before {sb} (can|could) walk definition and meaning](https://cdn.langeek.co/photo/46332/original/?type=jpeg "to [run] before {sb} (can|could) walk definition and meaning")
慣用句
くだけた
例
Don't try to build an app yet; you're running before you can walk.
to make an attempt to do something difficult without having the requirements or means to do so
