Most of these cannot be readily quantified but are disproportionately important to the poor, who cannot afford to distract or insulate themselves from them.

ECONOMIST: Letters

"The ice cannot readily be spotted, so please slow down and allow extra time for your journey, " said a spokesman.

BBC: Sussex black ice alert after 40 crashes

Unlike software or machinery, clever, innovative human beings cannot readily be replicated.

ECONOMIST: A survey on pay

The U.S. government cannot be expected to endorse fully and readily, if at all and if ever, an Israeli decision to strike first.

CENTERFORSECURITYPOLICY: Policing the Golan? No

"It's a political reality that around half a million irregular migrants can't readily be deported and EU migration alone cannot be relied on to fill the jobs many of them are doing, " he said.

BBC: NEWS | UK | UK Politics | Immigration amnesty is ruled out