no craft. just silence.
silence is a negotiators greatest weapon.
when engaged in conversation, people generally like it to continue.
when conversation stalls, due to you breaking it down, the other party (generally) concedes something, anything, to restart it. that is, unless they also use silence too, or are just simply not willing tp budge.
but in 90% of cases, something is conceded to restart the conversation or negotiation. and they don't even know they've done it, until they've said it.
everyone has conceded something like that in the past, you know, you just find yourself offering something and then stopped and asked "what the hell did I do that for?!". often happens when buying a car, or selling one to a dealer. also happens in fencing disputes, too.
works great on the phone with re agents, too.