Personally I think the trust model for phone calls has worn itself out. The network is too large, and the risk too great, for "guess this 10 digit number and you can call me any hour of the night" to be at all sustainable. In practice, if you aren't already in my contact list, my phone does not ring. (Otherwise it would be ringing all day long.) Telemarketers do seem to have realized that calling at night is unwise, for now. Relatives meanwhile...
I feel like if we were designing telephones as a brand new concept today, some sort of two-way handshake would be standard, right? Like a Friend Request on nearly any other network, before DMs can be sent. Phones were invented before we thought we had a practical need for such a flow, and the human-operated switching networks helped to somewhat discourage blatant abuse.
I feel like if we were designing telephones as a brand new concept today, some sort of two-way handshake would be standard, right? Like a Friend Request on nearly any other network, before DMs can be sent. Phones were invented before we thought we had a practical need for such a flow, and the human-operated switching networks helped to somewhat discourage blatant abuse.