After some crawling on the Internet, I stumbled upon this thread on Quora. For the lazy ones, the thread is about the things that can be done by humans but not by computers after N years. There are many references to Turing Test in answers stating that the best AI is still not able to pass Turing Test; therefore we do not need to worry about AI being an existential threat for the humanity. First off, I ought to say that I am on the cautious side (like Elon Musk and Bill Gates) on AI being a threat. To explain myself, I would like to show that AI is a threat that has begun to affect, even we think the Turing Test as the validation method. We only need to think in a different way to verify the test.
For the ones who don't know what Turing Test is; A and B (one machine - one human) are hidden from the human observer C. Looking at the interaction between A and B; the observer C tries to decide which one is human and which is the machine. If observer C cannot decide whether there is a machine or a human behind the curtain; than the machine passes the test. Conclusion is that machine exhibits intelligent behavior equivalent to, or indistinguishable from, that of a human.
From the definition, it is one of the legitimate milestones for AI to compass human capable agents. Therefore, it is normal for people to evaluate present AI to define its state and future potential using Turing Test.
I think a different formation regarding Turing Test where we replace the observer C with a machine as well. Then the remaining question turns out to be, is the machine C able to identify the machine A or even is this identification is necessary henceforth? Thinking the formulation in that way resolves many concerns for the AI supporters who say AI is not a threat since it does not and will not be able to pass Turing Test (at least in the short run). Nevertheless, when we replace C with a machine than the machine does not need to pass Turing Test to be a threat, right? Because we are out of the context like poor B depicted on the above figure.
Now let me explain, what does it mean in practice, changing the observer human with a machine. I believe real life "communication" is a good way to illustrate Turing Test. Think about the communication history. We started with bare foot messengers and have come to light speed flow of the today's world. At the time, we were sending a message and waiting very long for the response. The reason was the tools were the bottleneck for the communication. First we expedited these tools and come up with new technologies. If we think today, then we see that our tools are so fast that we are the bottleneck of the flow any more. We send our mails and messages in a second that bursts the inboxes and message stacks and consequently bursts us as well. If we also accept that the communication is the bare bone of the today's business world, companies do not want to waste time - time is money- and attempt to replace the slowest part with faster alternatives and so computerized solutions come to stage in place of humanized old fashion solution. Now, after we changed the tools for communication, we also start to change the sides of the communication up to a point that there is no need for any human being. There, we also have a fancy name for this Internet of "Things" (not humans any more). If you also look to the statistics, we see that huge partition of the data flow is between machine to machine communication. Could you say, in a more immense level of communication revolution, indistinguishability of a computer agent by a human observer is important? It is clear that we can still devastate our lives by our AI agents without passing Turing Test. You can watch out unemployment rates with the growth of the technological solutions.
Basically, what I try to say here is, yes, Turing Test is a barrier for Sci-Fi level AI threat but we changed the rules of the test by placing machines on the both side of the curtain. That means, there is no place in that test (even in the real life) for human unless some silly machine cannot replace you, but be sure it is yet to come.
Final saying, I am an AI guy and of course I am not saying we should stop but it is an ominously proceeding field. The punch card here is to underline the need of introspection of AI and related technologies and finding ways to serve AI for human needs not the contrary or any other way. We should be skeptical and be warned.
Some interesting links;