Late in my career I had to take a course for senior staff called "The Multi-Generational Workforce." The instructor, a mid thirty-ish woman, spent a great deal of time harping on how older workers/baby boomers placed entirely too much emphasis on being on time. She explained those younger than us didn't have that time hang up, technology had done away with worrying about the clock. They had lived their entire lives with 24 hour gas stations/convenience stores, DVRs, shopping on line, electronic banking, etc., and weren't programmed/constrained to see time as an issue.
In the class was a USAF colonel who sat straight faced during her spiel, then politely raised his hand. When called upon, he asked her if she'd every served in the military. She seemed bemused by the question, and replied with a smirky, smart ass, "Nope." He simply said, "I didn't think so. I don't have time to waste listening to this horseshit." With that he walked out.