"There are some people that if they don't know, you can't tell them"

This quote by Louis Armstrong talks with the suggestion that some individuals are simply not open to learning new things. They are so set in their ways that no matter just how much information you provide, they will not be able to understand it. This can be due to an absence of interest in understanding, or an absence of understanding of the subject. It might likewise be because of an uncertainty in their own abilities. Whatever the reason, it is clear that Armstrong is suggesting that there are some individuals that merely can not be instructed. They are stuck in their own means and also no amount of understanding can transform that. This quote is a tip that not everyone is open to finding out which it is very important to be aware of this when trying to educate a person something new.