"This house has never been built this way before." That implies someone's already designed how it's going to be built? What I often see in software that you'r

"This house has never been built this way before." That implies someone's already designed how it's going to be built? What I often see in software that you're expected to give estimates on the spot before there's a design. You're expected to be the designer and implementor, and you're expected to say how long it'll take before you've started designing. "I need features X, Y and Z" isn't a design. And if you think other engineering disciplines are different, please go ask an EE how long it'll take -- or what it'll cost -- to make a board with a 2 GHz SoC and 8GB of LPDDR4 and PCIe. (That's not a design, and if you don't get laughed at, you'll learn that the answer depends massively on the design)