The changing of equal experiences based on our age.
Older people are known for having a lot of knowledge from experience. If an 83 year old sits down and listens to a 5 year old, and the young one listens, really listens to the elder, they find their own knowledge and opinions are very very different.
Each experiences where they are, what's happening, and compares it to what they already know.
A bird flies overhead, and sings a song. Young person enjoys it and tries singing a similar set of notes. Children a re growing by mimicking what's around them in order to understand/know it.
Both people smile and enjoy the bird's flight and song. Older person may also know the kind of bird it is, and perhaps can say so if there is interest from the young person. This is assuming the young one doesn't yet have the "phone addiction" and looks it up in his hands.
Basically, the experience is totally different for these 2 people. The thinking process of a young person is based on wonder, awe and curiosity. There are not the resources from experiences in their mind compared to the older person.
Can the older person enjoy the same experience with some of the child's emotions? It is unlikely. That person's feelings are muted by all the memories stacked up in their head.
But, older teachers, or others working with young people, can still feel and see the emotions of the child. I've noticed that in one of my friends who taught for many years. She has sparkles in her eyes if a child points something out to her while walking in the woods. She also does the same thing for me, with a gasp of "ah" to point to an intricate morsel of leaf, fungus or bug.
I'm glad that my middle son has this ability...to stop and really examine things all around him. He's definitely shared that with his 3 daughters too, one of whom is now a teacher. But the drawback is that he is determined to read each description of items in a museum. It takes a long time to go through the exhibits with him!