Check out our followup on that : http://programming.witheve.com/deepdives/whateveis.html

1) Eve is amazing at graph algorithms, not so much at writing quicksort. At the same time, you don't need to write quicksort in Eve - it has all of the things you'd get from something like a SQL database. In general, anything requiring strict sequential order will be just ok right now, but it turns out actually very few things do.

2) sure and we have written some of it in Eve, check some of my other comments for links :)