Estimating features tends to result in projects with lower achieved value - in the same time period! We suggest that this is due to how value grows logarithmically while costs stay linear. Cognitive illusions prevent us from making the best decisions for success.
Half of the presentation "Diagrams for Understanding and Improving Agile Practices," originally presented at Agile 2009 by Arlo Belshee and Bonnie Aumann.
Clipping is a handy way to collect important slides you want to go back to later.