The reason ties are used for social signaling is because they're somewhat tricky to tie right. Easy to spot someone who's not used to it.
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My favorite form of signaling is counter-signaling, which relies on displaying *taste* or specific knowledge rather than money: hard to fake
Signaling is for broadcasting to outsiders that you're in the in-group. For insiders, you'll need counter-signaling, only visible to them.
