It is the responsibility of all of us to invest time and effort in uncovering our biases and in verifying our sources of information. As noted in earlier chapters, we cannot investigate everything ourselves. But precisely because of that, we need at least to investigate carefully our favourite sources of information – be they a newspaper, a website, a TV network or a person. In Chapter 20 we will explore in far greater depth how to avoid brainwashing and how to distinguish reality from fiction. Here I would like to offer two simple rules of thumb. First, if you want reliable information – pay good money for it. If you get your news for free, you might well be the product. Suppose a shady billionaire offered you the following deal: ‘I will pay you $30 a month, and in exchange, you will allow me to brainwash you for an hour every day, installing in your mind whichever political and commercial biases I want.’ Would you take the deal? Few sane people would. So the shady billionaire offers a slightly different deal: ‘You will allow me to brainwash you for one hour every day, and in exchange, I will not charge you anything for this service. The second rule of thumb is that if some issue seems exceptionally important to you, make the effort to read the relevant scientific literature. And by scientific literature I mean peer-reviewed articles, books published by well-known academic publishers, and the writings of professors from reputable institutions. Science obviously has its limitations, and it has got many things wrong in the past. Nevertheless, the scientific community has been our most reliable source of knowledge for centuries. If you think that the scientific community is wrong about something, that’s certainly possible, but at least know the scientific theories you are rejecting, and provide some empirical evidence to support your claim.