But now, because most people see them first on sites like Tumblr, Instagram, Twitter and Facebook, it's harder to command a hefty price tag.
But, for families with little money, attention is hard to command.
It is hard to make analogies between Hitler, who commanded the strongest army in Europe, and bin Laden, who commands "shadowy networks" that will take vast resources and infinite patience merely to define.
It is hard to see how General Prayuth, who commanded troops in the 2006 coup, could get along with a PT-led government that includes abrasive red-shirt leaders such as Nattawut Saikua, who has been charged with terrorism.
It is hard to imagine the endeavor that would sufficiently command Bloomberg's restless ambition and vanity.
It is hard to believe that financial services create enough value to command such pre-eminence in the economy.
Noah is the Bulls' defensive leader, but without him at anything approaching full strength, it is hard to see how they can regain command of the precious space in front of the rim in Game 2 on Monday night at Barclays Center.
Fees for public work are set low – at about 70 yuan (£7) an hour – but while private sessions can command 10 times that, it is hard to build a stable client base.
The problem with this view, Russell explains, is that it implies a level of far-sightedness on the part of the first breeders that defies all evolutionary experience: "Wolves do not obey human commands, and it is hard to imagine that people persisted in raising dangerous animals for uncertain benefits far in the future".
