Both are to blame. Apparently, it was old equipment. It's just that if your friend had new models of forklifts in production, then this could have been avoided. For example, I work at a factory, and our bosses have provided us with new equipment. Even everyone was told about
5 Technologies That Will Transform the Forklift Industry, and each of us had to study everything in detail. The bosses also compiled a test to make sure that absolutely everyone understood the new material. It sounds like a check at school, but in fact, it was the only way to check since most of us could lie.