What is not something you should do when you encounter someone from a different culture

What specific science discipline do most social engineering attacks rely on when they are being used?

There are traits like blood type and eye color, and others like speaking english or having a scar. what are the terms used to describe these different types of traits? how are each defined?

During the course of a raid, communication between swat team members suffered as excessive static overwhelmed radios. within the communication process, this static can be viewed as it interfered with the communication.