Good question! 
the old man's saying,  it is not that I understand ha.

Still, we may still use it even when we don't understand it. 
Or possibly, it is not for the use. 

 

 I take this to mean not that they can't be used but in the summarizing they lose some meaning. 

 I can use nostr without knowing the protocols at all such as.  

 but it can be described 

 yes! I can describe nostr.

The guy is a riddle that I cannot solve 🧐