In Fair Hill, Md., the recent site of a large international equestrian event, several farriers gathered, not necessarily an unusual occurrence where events that involve horses are concerned. However, this day lacked the usual sights and sounds that horse people have become accustomed to when considering farriers: no ringing anvils, no screeching grinders or sounds of clinches being blocked. The assembled farriers did not unpack toolboxes from their rigs or unload any horseshoes; nonetheless, the group descended upon the Fair Hill show grounds only armed with cameras, measuring devices, laptops,...