Reply To: Yeshiva Bachur and his sister- Maras Ayin?

While not explicitly stated, there is a concept of “rule of reason” that the McDonald’s analogy above makes very well We don’t blindly worry about how anyone might interpret anything we do….we use our sechel to reason which appearances would likely be misinterpreted by the large percentage of yidden, how that misperception might c’v lead others to repeat our inappropriate action(s) etc. , who else might be hurt etc. Walking on a public street in a heimeshe neighborhood with your wife/daughter where everyone knows everyone else and their family relationships isn’t likely to pass the “maris ayin materiality test”. For those who are machmir and hold by eruvim, perhaps hang a big sign on her back saying “I’m his wife/daughter”