Tasks are bad! Well, sometimes they may be useful, but most of the time they are abused and are used by management to try to command and control their staff. There are other ways other than using tasks.
This is the post for a presentation presented at LAST Conference. The idea for the presentation, and this post came from a client that asked me to ensure that all the tasks in their system, that had not been completed within 2 days of the due date by subordinates, were to be escalated to their manager, and then if they were not completed within 2 days by the manager, escalate to the GM. I said no, I would not be building a system that does that, there are other ways we can deal with things getting done.