Is dodo a foolish bird?

Is it true that the dodo, a now-extinct bird species, was inherently foolish? Or is this a misconception based on historical accounts and perhaps some exaggerations? After all, how much do we really know about the intelligence and behavior of a species that has been gone for centuries? Did the dodo's inability to fly and its seemingly placid nature contribute to this perception? Is there any scientific evidence to support or refute the notion that the dodo was a foolish bird?