Crime, for those living in poverty, can become a business. Much like any other capitalist enterprise, their business further exacerbates inequality in society. The poor feel aggrieved by inequality - they exist in a world where they are disproportionately unrewarded for their input into the economy.

Individuality is my biggest fight, not #MeToo. People need to realise their own power, their own freedom, and their own ability to be better. My book Brave is not about #MeToo, but when I went on my first book tour – that was all people were asking me about; and once again, I had my narrative stolen – and I was portrayed as this figure, full of rage, because – perhaps – it's easier for people to not understand my narrative and write me off as angry, and that's a real shame.

Fear can be useful for political leaders and governments as a screen to introduce unpopular legislation. There are those who argue that 9/11 enabled George W. Bush to pass far reaching surveillance laws under the Patriot Act, which would have been unthinkable without the fear produced by the terrorist attacks.

Scaling any business is about creating a model, debugging the model, making sure you understand the ingredients that need to be scaled up, and making sure you have a process to scale. All of this needs to be wrapped-up in a financial model that allows the scale to be funded.

When those inputs are removed, it starts to prune function and structure, because those functions aren't needed anymore. It's still that same process — we just call it ageing. And it happens because we've removed physical activity, cognitive stimulus, and social connection. The brain responds accordingly.