I expect, at the very least, what the app is supposed to do. Building a screen is, IMNSHO, not related to the amount of work that is expected; the real time sin

I expect, at the very least, what the app is supposed to do. Building a screen is, IMNSHO, not related to the amount of work that is expected; the real time sinks are functionalities behind the screen. Every time I got into estimation from GUI, the result was completely unrelated to the estimate.