There is no such thing as a failed experiment, only experiments with unexpected outcomes. - Richard Buckminster Fuller (US engineer and architect, 1895-1983)
I was fortunate to be present in the studio when Buckminster Fuller was being interviewed on the campus TV station. He went to the chalkboard (no whiteboards in those days) and wrote
2T = 2P
After setting down his non-empty tea cup, asked where's the men's room? I was also fortunate to get a signed copy of Nine Chains to the Moon, which is somewhere in my library
There's been a question asked on LinkedIn what's another word for a failed experiment? The answer comes from Fuller.
It always troubles me when a questioner asks a question whose answer was taught in High School science class.