A month in hyper-space can scatter the brain. Traditional books offer readers respite from hyperactivity. The book’s definitive, closed, linear argument lets mind and sensibility enjoy moments of inner harmony. Linear text offers the kind of contemplative thinking that goes beneath the surface. –Heim, Electric Language: A Philosophical Study of Word Processing. New Haven: Yale University Press, 1987. —Thinking that Goes beneath the Surface (Jerz’s Literacy Weblog)

This quote is almost 20 years old, but it’s still valid.