Subtraction: If It Looks Like a Cow, Swims Like a Dolphin and Quacks Like a Duck, It Must Be Enterprise Software Link October 31, 2007 Robby Subtraction: If It Looks Like a Cow, Swims Like a Dolphin and Quacks Like a Duck, It Must Be Enterprise Software Khoi Vinh on enterprise software. And I agree, enterprise software is bad, very bad.