21-05-2017, 12:39 PM
The old saying by Einstein holds true. Try and explain it to a cleaner till it's understood. If they understand the explanation, it's fine. The number of times I tried explaining something I suddenly realised I didn't understand myself. I read once a teacher threw away all books that didn't use conventional current so the students wouldn't get confused. Yet confusion is part of learning or exposes gaps. Often any confusion comes later on and understanding may take time.
