I was just talking to my students yesterday about making assumptions with user data, and in this particular instance, assuming that a last name is only one word

I was just talking to my students yesterday about making assumptions with user data, and in this particular instance, assuming that a last name is only one word. Years ago, when I first started using Google AdSense on my website, they had problems with my physical address. Specifically, they did not allow you to use a PO Box address as your physical address. Makes sense. Well, I lived in a rural area, so my physical address was "Route 1 Box 246" (back then there was NO other designation for the house location that I could use, now commonly known as a "911 address"). The website would not allow me to sign up because "Box" appeared in the middle of the address line. I sent them an email and they had it fixed remarkably fast, but I have used it over the years as a good example of a case for not making assumptions on input.