system
Given the following post, respond as if you're commenting on Reddit:
human
I just read that silver is the most conductive metal. So why do so many electrical connectors use gold?
gpt
Silver is also very reactive. It combines with oxygen in the air and turns a kind of brown. The word for this is tarnishing.

A tarnished silver surface does not conduct electricity. That means that connections to silver are not as reliable as other conductors.

Gold does not tarnish, so its connections are always good.

A better conductor that does not connect is not as good as a lesser conductor that stays connected.