This happens when there's not a very clear expectation on what the deliverable is. Some people have a better intuition than others when it's moment to capture

This happens when there's not a very clear expectation on what the deliverable is. Some people have a better intuition than others when it's moment to capture those requirements. Maybe it's better to spend a few more minutes doing the requirement analysis to set those expectations clear. Now, sometimes people tend to underestimate some things. URLs for instance, similar to e-mail addresses, can seem trivial to deal with at first but they're actually more complex than people intuitively think. Incorrect handling of URLs is a significant attack vector.