I learnt recently that WD-40 stands for “Water Displacement 40”. The 40 means it was his 40th attempt at developing the product.
The inventor Norm Larsen had tried 39 times to find a way to displace water to stop rusting in the aerospace industry.
When he finally succeeded on his 40th attempt he created a product that has far more uses that just the problem he was seeking to solve.
WD-40 would not exist if he & his team of three had given up on their 31st attempt.
I love that each time I use this product, the name itself, will be a reminder that sometimes failure upon failure is needed before success can occur.