In many places restaurant these days accepts checks. There no real reason for a restaurant not to trust a person to not double spent.
Trusting a check implies that you can trace it to a bank account, which, thanks to the Know Your Customer regulations, in most cases can be linked to a specific person. Trusting a bitcoin payment implies that you trust a disposable number.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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