The pro-Obama answer is that the young senator is a reformer without parallel, a change-maker and mould-breaker.

ECONOMIST: Barack Obama

This would be the watch to wear if you believe that discretion is a virtue without parallel.

WSJ: This Sporting Life

Mr Carter hopes to enter a second century of composition with unlimited horizons, an achievement almost without parallel in the history of 20th and 21st-century art.

ECONOMIST: Elliott Carter

Since Beinisch's professional godfather, retired Supreme Court president Aharon Barak, enacted his "judicial revolution" in the 1990s, Israel's judicial system has been without parallel in the Western world.

CENTERFORSECURITYPOLICY: Democracy strikes back

At the same time, China from 1979 to 2009 is a case study without parallel: creating wealth by mirroring some behaviors and values of the people who have the money.

FORBES: Take A Hint From China

To be fair, the climbing is without parallel.

FORBES: 'Assassin's Creed IV: Black Flag' And The Lackluster Combat Of Ubisoft's Flagship Action Franchise

They ran in parallel without really touching, except, perhaps, in this respect.

ECONOMIST: In their different ways, defenders both of an open society

The most basic benefit it offers is the ability to improve parallel processing without sucking up a lot of electricity.

FORBES: Cray Claims The Fastest Supercomputing Crown With The NVIDIA-Powered Titan

The Conservatives might, again, cut taxes without cutting public spending in parallel.

ECONOMIST: Which party is least likely to make it sick again?