Consider how sergei reacts when yoni comes to his door. does his response seem rational(resonable) or not? how does sergei's cultural experience explain his reaction?

He is used to the kgb knocking on his door to ask him challenging accusing questions

is basically a good source of getting and others by what you know for example if someone asked a question and you know the answer you could answer it and get some points or if you need on a question you could make a post about it and wait till someone answers it or just look up the question and see if someone else has asked about it