> Then I sat down to write the Excel Basic spec, a huge document that grew to hundreds of pages. I think it was 500 pages by the time it was done. (“Waterfall,” you snicker; yeah yeah shut up.)
On the page above "user manual as spec" is "point of departure spec", which would be more like the iterative prototyping style.
For example, the Excel Basic spec: https://www.joelonsoftware.com/2006/06/16/my-first-billg-rev...
> Then I sat down to write the Excel Basic spec, a huge document that grew to hundreds of pages. I think it was 500 pages by the time it was done. (“Waterfall,” you snicker; yeah yeah shut up.)
On the page above "user manual as spec" is "point of departure spec", which would be more like the iterative prototyping style.