Booleans (bool) have only two possible values: True or False. Note the capital letters. true and false (lowercase) don't work. python is_student = True has_permission = False Booleans drive decision-making.
Your code will ask questions like "Is the user logged in?" or "Is the number positive?" The answers are always True or False.
You'll use booleans constantly with if statements in the next section. For now, just know they exist and represent yes/no, on/off, true/false states.