Now, it, the reason why its important to know and to set your working directory is because when you read data or when you write things out using functions like Read or Write CSV, they will be read or written to your home, your working directory. so for example, if I do something like read.csv, I want to read, let's say mydata.csv if the file is not in my working directory, you'll get an error one that looks much like this because it can't find the file in the working directory. so one possibility is that you can, if you know where this file is, you can move it to your working directory, or, or you can change your working directory to be wherever this file happens to be. 