Why the first 24 hours determine the fate of a new connection
After an event, a person has dozens of faces and conversations in their head. After a couple of days everything blends together, and you turn into just another “I’ve seen them somewhere before.”
The first 24 hours are a window when their memory still holds your voice, your joke, the topic you discussed. If at this moment you write to them, remind them of the context and add a small benefit, it’s like pinning a flag: “this person is important, they’re worth remembering.”
If you wait a week, their memory and emotions have already cooled, and your message is perceived as a new cold contact, not a continuation of the warm conversation you already had.