I don't think it's unique, but many software projects are inherently prone to big surprises you can't catch until you start the work. I would love to keep estim

I don't think it's unique, but many software projects are inherently prone to big surprises you can't catch until you start the work. I would love to keep estimating and estimating and get an accurate number, but it costs money and, eventually, you're just working on the project.