As a corollary, when everything seems old hat to you, you've truly become old. True wisdom maybe maintaining your curiosity and an open mind so you can branch

As a corollary, when everything seems old hat to you, you've truly become old. True wisdom maybe maintaining your curiosity and an open mind so you can branch out at any age but knowing when to "split into new branches" and when to "[merge] into a previous experience". Given how abstract that sentence is, this is clearly an art.