"A hair color or favorite snack isn’t going to be helpful." It's about humanizing the product design process, don't pay any mind to extraneous information like

"A hair color or favorite snack isn’t going to be helpful." It's about humanizing the product design process, don't pay any mind to extraneous information like hair color etc. At the end of the day, personas should be representative of the people you are developing products for and that's inherently valuable to the product development process and all the people involved who don't have a chance to be in front of users and get a feel for their needs, which determine how successful your product will be when they are aligned with what you are coding.