Craig/Wendell/Foop/whatever is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
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Is someone overexcitedly explaining things you already know? Consider this approach:
Swallow your ego, shut your goddamn mouth, and listen! Encourage them! There’s no point in shutting someone down because you’re bitter and self-conscious.
@jordyd Yes, encourage them... don't say "I know", say "I agree". Still there's the danger of getting bored with hearing the 'same old thing' and dozing off...