I try to live by this, just because I know something/seems obvious to me, doesn't mean that the people I meet/work with/live with/hang out with - will have the same knowledge. Sharing in others interest and excitement can be so much fun - even if it is old news to me.
This is good advice. I've been dating someone recently who's only 7 years younger but I feel like I've (unintentionally) said, "wait, seriously?" too many times lately.
Her not knowing who Christian Slater is hit me particularly hard.
