So, "We're hardwired to become leaders of the pack" means "humans are like dogs or wolves. This isn't learned behavior, it is inherited behavior. It is part of human nature, just as spiders are hardwired to spin webs and bees are hardwired to build hexagonal honeycombs." By the way--I personally do NOT believe that human beings are "hardwired to become leaders of the pack."

"Hardwired" started as computer jargon. Computers were once made of vacuum tubes or transistors that were wired together. The "square root" function might be implemented in the computer hardware itself, from the way the components were wired together. Or, it might be part of a software library, loaded from magnetic tape. If your program asked for the square root of 9 and the computer gave the result as 2.9998, you might complain. An engineer might say "Thanks, that's in the software library and we will fix it," or they might say "I'm sorry, that's hardwired in the floating-point arithmetic unit and can't be changed." In the psychological debate of "nature versus nurture," up to perhaps the 1970s the dominant school of thought in the United States, "behaviorism," held that the brain was a "tabula rasa," a blank slate, and that virtually all behavior was learned. Recent discoveries have tilted opinion toward the idea that some behaviors are determined by genetics and evolution. Behavior that is inherited and predetermined can be called "hard-wired," by analogy to a computer function that are built into the computer and are there from the first day the computer is turned on, before any programs are loaded into it.

We are designed to be leaders of a group.

you are welcome

Thank you