What you don't know and you didn't ask question you may not know it. Don't pretend over what you don't know this assumption could be costly and retard lots of things. What would it profit you if you can't use what you don't know? We are gradually becoming use to things such that many times it becomes difficult for people to go through manuals especially when they bought new things. Let me ask, when last did you take your time to read carefully the manufacturer's instructions for the kind of phones and electronics you are using.
Familiarity has taken over and many of us are guilty of this. Someone bought a generator brand new recently. He tried to start it but all efforts proved unsuccessful. When i checked, i noticed the fuel gauge is ok as well as the engine oil side. Personally i never knew that the generator has key and it needed to be turned on before starting. This was the broad ignorance we noticed. We had to deploy the service of a neighbour who happened to be a trained and certified medical personnel came to check it out. We realised that the key wasn't turned on. Immediately he checked and turned the key on the generato started working. We were so happy because everything was functioning well to God's glory.
Lessons
The following lessons were deduced;
- Never claimed to know what you don't know.
- Feel free to ask question and clarification especially on new things you don't know.
- Don't be stiff to learning new things.
Hope this add a quantum leap to your understanding.
Here are pictures of my cleaning activity
Thanks @solarisfuture @cleanyourcity