He has apparently never worked with a dataset of more than 1,048,576 observations, Excel's row limit [0]. [0] https://support.office.com/en-us/article/Excel-sp

He has apparently never worked with a dataset of more than 1,048,576 observations, Excel's row limit [0]. [0] https://support.office.com/en-us/article/Excel-specifications-and-limits-ca36e2dc-1f09-4620-b726-67c00b05040f https://support.office.com/en-us/article/Excel-specification...