There’s a great fable, frequently referred to in the Agile community:
A pig and a chicken are walking down the road. The chicken turns to the pig and says, “We should open a restaurant.”
“Good idea. What should we call it?” the pig replies.
“Ham and Eggs!” says the chicken.
The pig thinks for a second and replies, “In that case, never mind. It sounds like I’d be committed, but you’d only be involved!”
When it’s difficult to distinguish between the chickens and the pigs, you have no pigs.
And your project is doomed to fail.
Never hold a meeting, start a project, or even throw a party without at least one true pig.
Because when the going gets tough (and it always does) that pig will likely mean the difference between success and failure.