| I tried to organize vocab by difficulty level for an English language-learning app once. It shocked me how there is absolutely no "right" answer. If you are teaching English for travel, then you're prioritizing a lot of stuff around bathrooms, transportation, menu items, etc. If it's for understanding TV, it's a lot of words like "murder", etc. Depending on which TV shows you want to understand. If it's for reading the newspaper, you don't ever need to know "bathroom", but you sure do need to know words like "congressman". While if you are living somewhere, it's really important to know a lot of basic supermarket items that you wouldn't prioritize for other usages. Also, while it's easy to calculate word frequencies for stuff like newspaper articles, there aren't any good statistics (last I checked) around just normal everyday conversation. Because that stuff isn't getting recorded and transcribed. And the substitutes -- transcribed speech from TV, radio, podcasts, etc. -- is not the same context as the random stuff you say at home and during an average day. |
Linguists have resorted to spying on people in parks and shops and restaurants, to get "natural" language unperturbed by observer effects, audience tailoring, the filter of writing, etc. (In most cases that would not be considered ethical today!)
The gold standard is something like: get acculturated to the language community you wish to study, make some acquaintances and friends, somehow finagle an invite to their homes or workplaces or social venues, and then with their permission, record their conversations as unobtrusively as you can.
There is so little data on how language is really used it is quite bedevilling. As soon as people know you are listening they change how they speak.