I mean it’s not that hard to recognize “thorns” meaning difficulty and obstruction.
But as I’m saying this, I remember that younger generations didn’t spend time outside as kids. So they may never have pushed through a thicket of thorns.
Eventually, we’ll have people who’ve lived their entire lives in zero-G, and they won’t have an intuitive understanding of the feelings implied by the phrase “stand up for oneself”. They won’t understand the state of motivation versus fatigue implied by “holding one’s chin up”, that the posture of one’s body was a function of the interplay between gravity and dopamine.