Timo Elliott (Employee #8 at Business Objects) blogged on a similar topic back in 2007 with his "Will Computers Ever Help With Decisions?" article (I hate to give away the ending, but Timo answered his own question with "No"). It's an interesting blog about why people are still unhappy with their computer appplications, so be sure to read it.
Timo gives us a definition of "decision" itself:
"A decision is a situation where information is lacking by definition. Many executives define their jobs as "making decisions" -- i.e. tasks that can't be automated. As computers take on the lower-level tasks, they're free to move on to more complicated choices."
Like Howard, Timo points out a significant dividing line between applications that automate tasks and those that present information to humans for a final decision. It the computer has all of the information necessary to reach a conclusion, then the result cannot be considered a real "decision." Instead, it is an automated task.
Timo concludes his blog with:
"But to decide (and err) is human. Recognizing this and setting expectations appropriately can help smooth the relationship between the people that consume information and the groups that provide it."
Notice our natural biases both for and against the human race. We think that only humans can make decisions; computers are beneath us in that capacity. However, we're quick to admit that humans make mistakes, unlike computers which are inerrant (except for when software applications make the mistakes we accidentally tell them to make -- too bad computers cannot decide to not follow our instructions!).