If you start allowing girls to exchange their phone numbers with guys, it will lead to indecency. No, not in every case; maybe not even in most cases. But it will happen, and that is why the rabbonim shlita are resolutely and vigorously opposed to it.
And if you allow people to talk on the telephone, it will lead to lashon hara. No, not in every case; maybe not even in most cases. But it will happen, and that is why the rabbonim shlita are resolutely and vigorously opposed to it.
Wait, what… they’re not? 🙂
The Wolf (who had the audacity to look up the phone number of a girl he was interested in.)