Yup. A hackathon might be 80% of the work. But it's the easy 80%. The proven rule of thumb: The first 80% of the work takes 20% of the time / resources. The

Yup. A hackathon might be 80% of the work. But it's the easy 80%. The proven rule of thumb: The first 80% of the work takes 20% of the time / resources. The remaining 20% of the work sucks up 80% of the time / resources. The latter? The Devil is in the details.