Superficially, it feels like duality since we both have similar strengths, but often baffle each other because we approach things from different angles.

Let's say we're both into playing basketball. I want to play so I call up my LSE friend:

"Hey you want to play basketball?"

"Hmm... Who's playing?"

"Uh, so far it's just us but I'm sure we'll be able to find strangers to play with."

"I only want to play with friends I'm familiar with."

"But all our current friends are unavailable."

"That's too bad."

"..."