Genesis of WD-40 "Water Displacement 40th attempt. Successful" As stated years ago by a representative of the manufacturer on CNBC. Comes directly from the procedural notes of the experimenters and how they referred to the final formula, which indeed does displace and protect against moisture.
Apparently the previous 39 formula attempts were not charted as successful.
City dwellers rely on Duct Tape & WD 40,
ranchers rely on Barbed Wire & Spit.