attention
“In an information-rich world,” Herbert Simon wrote in 1971, “the wealth of information means a dearth of something else: a scarcity of whatever it is that information consumes. What information consumes is rather obvious: it consumes the attention of its recipients. Hence a wealth of information creates a poverty of attention and a need to allocate that attention efficiently among the overabundance of information sources that might consume it.”
The more there is, the harder it is to pay attention. As Thoreau so wisely said: "Our life is frittered away by detail ... simplify, simplify."