If it were almost anything else, people would be out in the street just rioting, trying to get the government and public sector and private sector to get some other cancer-causing agent off the street.

CNN: Debaters Agree Cancer War Should Stress Prevention

There are others, but if we look at the one that is most pervasive and causes the largest number of disease in this country, lung cancer is rising and it's rising because we have not been able to get this cancer-causing agent off the street.

CNN: Debaters Agree Cancer War Should Stress Prevention

But for a chatbot to pass itself off as a human agent, more than ten times this number of conversations will be needed, says Mr Carpenter.

ECONOMIST: Monitor: Call and response | The