Read this introductory paragraph, which is missing an important element.

There was a time when robots and home automation were just a fantasy. Robots were found only in science fiction and home automation was limited to cartoon families who had every convenience at their fingertips. Meals arrived with a simple push of a button. A robot maid performed every task humans didn’t care to do.

What is it missing?


A hook


Background information


The tone is not set


A thesis statement