When a client says, “Just pin the four corners,” technology can do the math —but only a surveyor can draw the line between convenience and responsibility. When a client says, “Just pin the four corners,” every surveyor knows what’s coming next: a negotiation between perception and professional reality. To the client, those corners are four quick points — a morning’s work and a modest invoice. To the surveyor, they’re the anchors of liability, geometry, and record.