Do you know the difference between a fact and an opinion? It can be a hard thing to understand. Some things are facts - like the number of robots in this book. Other things are opinions - like which robot would make the best friend, or which robot dances best. And sometimes to tell the difference between a fact and an opinion, you need to wait to get more information - that´s because facts can be proven true or false, and opinions are things you feel and believe - but that you can´t prove. Mike Rex introduces young readers to the very important distinction between facts and opinions, and he reminds us that it is nice to listen to one another´s opinions, and to stand up for the facts!