'I speak to Robert Epstein, a research psychologist at the American Institute for Behavioural Research and Technology, and the author of the study that Martin Moore told me about (and that Google has publicly criticised), showing how search-rank results affect voting patterns. On the other end of the phone, he repeats one of the searches I did. He types “do blacks…” into Google.

“Look at that. I haven’t even hit a button and it’s automatically populated the page with answers to the query: ‘Do blacks commit more crimes?’ And look, I could have been going to ask all sorts of questions. ‘Do blacks excel at sports’, or anything. And it’s only given me two choices and these aren’t simply search-based or the most searched terms right now. Google used to use that but now they use an algorithm that looks at other things. Now, let me look at Bing and Yahoo. I’m on Yahoo and I have 10 suggestions, not one of which is ‘Do black people commit more crime?’

“And people don’t question this. Google isn’t just offering a suggestion. This is a negative suggestion and we know that negative suggestions depending on lots of things can draw between five and 15 more clicks. And this all programmed. And it could be programmed differently.”

What Epstein’s work has shown is that the contents of a page of search results can influence people’s views and opinions. The type and order of search rankings was shown to influence voters in India in double-blind trials. There were similar results relating to the search suggestions you are offered.

“The general public are completely in the dark about very fundamental issues regarding online search and influence. We are talking about the most powerful mind-control machine ever invented in the history of the human race. And people don’t even notice it.”'