An employee at the special share-sale counter took not a single order in the first three days of the offering.

ECONOMIST: Special delivery

What it lacked was human intelligence, the single most important weapon in the arsenal of counter-terrorism.

BBC

If I were to reduce our counter-productive speaking to a single motivation, it would be this: We often speak to make ourselves feel better in the short-term.

FORBES: How to Speak More Strategically

As a single exchange, Duffy figured it could cut millions of dollars in overhead costs, offer every product class in a single electronic system and be large enough to expand into over-the-counter derivatives trading.

FORBES: Up From the Pits