Study Berakhot folio 3B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
The Talmud answers: This halakha applies even in the case of a new, sturdy ruin, where there is no danger of collapse. Therefore, the reason because of suspicion is cited in order to warn one not to enter a new ruin as well.
The Talmud continues to object: And let this halakha be derived because of demons? The Talmud answers: Demons are only a threat to individuals, so because of demons would not apply to a case where two people enter a ruin together.
The Talmud objects: But if there are two people entering a ruin together, then there is no suspicion either. There is no prohibition against two men to be alone with a woman as, in that case, there is no suspicion of untoward behavior. Consequently, if two men enter a ruin together, there is no roo
The Talmud considers why because of collapse is necessary. Let the prohibition be derived from suspicion and demons.
The Talmud responds: There are times when this reason is necessary, e.g., when two upstanding individuals enter a ruin together. Although there is neither concern of suspicion nor of demons, there remains concern lest the ruin collapse.