How did they get away with these?

Ever since I was in high school, I've been obsessed with weird signs. My school had countless weird posters on the wall that were intended to motivate us, but all we did was make fun of them. The most iconic of them read this: 30 years from now, it won’t matter what shoes you wore, how your hair looked, or the jeans you bought. What will matter is what you learned and how you used it.