It is true I had been successful on a small scale in overcoming one of the main difficulties in the new process, but there was still much to invent, and much that at that period I necessarily knew nothing about. ↗
It's always the small people who change things. It's never the politicians or the big guys. I mean, who pulled down the Berlin wall? It was all the people in the streets. The specialists didn't have a clue the day before. ↗