A s I watched this year’s crop of college freshmen descend on campus, buried in smartphones, earbuds in, heads down, I started thinking about how different their life experience has been from those of generations past. A lot has changed over the years. Let’s take a look at the world in which these 18-year-olds have grown up.For students in the Class of 2019:The Internet has always been here.They’ve never known a world without mobile phones.They weren’t even born when Kurt Cobain and Dave Grohl last played in the same band.Wi-fi is expected, everywhere. (I’m waiting for a student to tell me it’s guaranteed in the Constitution.)The Internet has always had its own awards show, the Webbys.They’ve always been able to go online to get CNN.They’ve never known a world without Harry Potter.Hybrids have always been an option for car buyers.In spite of their obsession with coffee, “Java” has always referred to a computer programming language.Netflix has always been around. So has Amazon.They were only preschoolers when the attacks of 9/11 happened.They have no idea what you’re talking about when you refer to the white Ford Bronco or the Unabomber.Do you think any of my smartphone-obsessed students would believe that on my college dorm hall, there was one payphone available for 50 students? Or that the only way to take a picture was with a camera?Are you feeling old yet?The opinions expressed here are solely those of Donna Krache.