I occasionally suffer from "bright shiny object" syndrome, or like a dog who suddenly veers off when he spots a squirrel. When I'm working on one thing, something else will grab my attention; I drop the thing I'm working on and jump to the other. I know that isn't efficient, yet I sometimes don't realize how distracted I have become.
You don't have to be a senior to experience a "senior moment," meaning you forget an otherwise familiar word or name, or can't exactly remember what you planned to do the next minute. It happens throughout life, it just seems to happen more frequently with age. But it's not always due to mental decline in our later years that we lose track of things.
Open offices create a more collaborative atmosphere because employees can interact more easily. However, there should be spaces that allow employees to be focused and others for collaboration. Open office frustration tends to happen when the spaces are not used properly.