"Don't try to force it: If you hit something weird, never hesitate to fall back to SQL. ActiveRecord provides a dozen different places where you can inject small SQL fragments into your queries, or you can just call 'find_by_sql' and do everything by hand."

I'm comfortable working like that, but it is exactly what the article is criticizing. Sure, it works - but the whole idea of an ORM was supposed to be avoding that.