“It’s no longer just the geeky runner going to technical stores and learning about form,” said Sean Murphy, a biomechanist with New Balance.

Sometimes this very subtle contrast becomes only too visible, as when in wartime Jewish business men were almost lynched because they were thoroughly business men and worked for profit.

Since hybridization with the ruddy duck could lead to extinction of the white-headed duck, Spain began to kill its ruddy ducks. Trials to eliminate ruddy ducks from the U.K. began in 1999, and were overseen by a euphemistically named White-headed Duck Task Force.

This lawyer charges a retainer for his work.