Problemer med brugen af kolonner og rækker

'That can lead to problems if the first 1000 rows of a column contain numbers, and row 1001 contains text. In that case the entire row will be coerced to numeric, and the following rows will contain NA values. Adjust the argument guess_max to something larger to catch this problem.' - https://kubdatalab.github.io/R-toolbox/reading-files.html

Vi kan lige snakke om det.
