Proving the value of better requirements

Ever since I did the research on tools for product managers, I've been diddling with an ROI calculator for improved product requirements, which can come from two sources: (1) hiring another product manager; and (2) implementing a specialized requirements tool.

Here's the final product. Really, this is a way of demonstrating the value of product management. Product managers and PM tools are just the tangible manifestations of that business function.

[Cross-posted at The Heretech.]