This is an interesting article about aging and memory. You will find it on BBC using the link below. The quote is a metaphor with cameras and photography. Many of us regognise ourselves in this. So, where did I park my car yesterday? I guess you don´t have to be old to feel it embarrassing.

“It’s like when you take a photograph – there’s the shutter speed to consider, but there’s also the depth of field. Perspective matters.”

A Point of View is broadcast on Fridays on Radio 4 at 20:50 GMT and repeated Sundays 08:50 GMT or listen on BBC iPlayer.

Unfortunately I can’t see who wrote it.

http://www.bbc.co.uk/news/magazine-31849855