Huh, you're right. I disagree with the author, then. > They’re like the coffee machine on the office: you press the button, delicious coffee magically appears

Huh, you're right. I disagree with the author, then. > They’re like the coffee machine on the office: you press the button, delicious coffee magically appears in your cup But even office coffee machines usually have some level of configurability, in terms of serving size, flavor, etc.