human
I'm a bit confused about the concept of a zero. How can I understand it better?
assistant
A zero is a symbol that represents nothing or a lack of something. It’s often used to represent the number 0, but it can also be used as a placeholder for any number of other things. For example, if you wanted to know how many people were in a room, you could write “There are 3 people in this room” and then replace each person with a zero.