For a nasty surprise, add 10, 20 to your list.
As ABG points out, the sort descending only would for for alpha input. For numeric input, you may need to convert before sorting. This is one way to do that using the list mapping block which works for either an alpha or a numeric list.
Et tu, CSV
Nice, @KevinWang. And @ABG I looked into CSV alternatives. Unfortunately, they require decoding and all have their own issues. We already have support for CSV and json seems to be the standard now.