How many years until General Direct Dialed telephony dies?

Discuss.

As I'd posted this poll a week or so back, general direct-dialed telephony, a/k/a PSTN (public switched telephone networks) seem to be in trouble. I think we could be within five years of their total collapse. And no, not just land lines (already about 25% of their peak in much of the US), but _all_ direct-dialed phones: mobile and VOIP included.

The problem, as I'd written before, is paradoxically the _low_ cost of calls. This is inducing tremendous volumes of junk calls, with one ...

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@dredmorbius It's the #@*&#@$ topology - any can reach any in one step is a nightmare. An absolute nightmare. That's what's going to take us down. We need something like web of trust to put a distance metric back in; anything that doesn't have one is going to implode.

@feonixrift Or one-on-one whitelisting. Basically the UI that mobile phones already have, but with different defaults: Silence all incoming calls by strangers! @dredmorbius

@kensanata @dredmorbius
This is the ball of radius one and all other radii are infinite topology. It works great, if people are willing and familiar that they need to get introductions from other humans in order to connect. Given the success some networks have had with FOAF type layers, I think this can be leveraged and improved upon.

@feonixrift My experience with friend-of-a-friend like sharing has been dismal. Sadly, enough of my "friends" have terrible taste and I'm better off not knowing. @dredmorbius

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@kensanata Some friends are better recommenders than others.

In cases, getting agreement from a set, or having a local authority (in the sense of "has good taste and/or sense") might work.

@feonixrift

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