Why projects fail

They fail because the executive team is sleeping. Anyone home?
They fail because the executive team is busy being buys with executive stuff.
They fail because because a lack of planning. The plan sucks!
They fail because the project was a bad idea to start with in the first place.
They fail because nobody took the time to clearly articulate and write down ALL the requirements.
They fail because the project manager and planners suffered from the planning fallacy syndrome.
They fail because ...
 
to be continued!