Could you fail 39 times?

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 … More Could you fail 39 times?