Why software projects take longer than you think – a statistical model · Erik Bernhardsson
erikbern.com/2019/04/15/why-software-projects-take-longer-than-you-think-a-statistical-model.html
What Jamie wrote
This is like reading a mathematical breakdown of what I've seen over decades of building software. It also highlights why Agile processes focus on spiking the biggest unknowns before tackling other tasks. Those individual tasks can take all of the time.