So I am a back end developer, but the UI team seems to be taking forever to make front end pages with no front end display logic. Any vague estimates for a page with text boxes that calls an API to fill, and API to save?

*This is half serious wondering, half poking fun at vague estimate requests

In a book about development estimation there is the following question:
Currently, how many boomerangs laying at the south coast of Australia?

As you can see you can only estimate such kind of things if all data is available. (And all data never gonna be available because of clients and the lack of seeing what will interfere at the future. ) The best method as i know is to estimate minimum, maximum and take their average × 1.4 to get the final estimate.

Boy how i hate that part of the job^^