The surprising consequence is that amplitudes can interfere with each other. If an event can happen in two different ways, one with a positive amplitude and one with a negative amplitude, the contributions can cancel out, leading to zero probability of the event occurring. Decreasing the number of paths can paradoxically increase the likelihood of an outcome.

Democracies are not very good at long term planning in general and population ageing is the utmost long term planning.

We all experience challenges. If you always make one thing your excuse or let other people drag you down because of something like your gender, it will become your prophecy. Whatever reason, you will never know for sure. You just have to keep fighting.

The very idea that – say – Make America Great Again – should be our guiding creed captures almost all the counter-enlightenment themes. It idealises the greatness of a nation as the ultimate good, as opposed to making all people healthier, safer, happier, richer and better educated. Rather than looking ahead to the progress that can be made, it looks back to a hypothetical golden-age to which we must return.

We cannot think about technology in confrontational terms. There is no race against the machines, there is no fight, no war. We have to end this long, historical confrontational narrative.

Our cognitive capability to reason has not evolved to find truth, it evolved to help us survive and that means that we sometimes find it easier to stay with a group rather than believe the correct thing.

The UAE has a rich history of trade and has, for centuries, offered fertile grounds for dreamers to pursue their entrepreneurial aspirations. The UAE also has a history of opening its home to people from all over the world, and this diversity brings with it a unique opportunity of creating new markets and businesses.

I can see from people I've lost in my life that the thing you leave behind is love, so I hope I've created a bit of that too… I know I've been lucky to receive a lot.

Whether we look at the rioters who converged on the capital, the Gamestop Redditors, Incels or Qanon followers, what they have in common is that they're groups of people who are lonely and craving community. Right wing populists have very effectively spoken to this feeling. Trump and Le Pen talk about the 'forgotten people' they say 'we hear you' – That fundamental need for human connection is missing for significant swathes of our population, and that's dangerous.

I realised that athletes were my customers- they were the people I wanted to sell too. We wrote to them with a 15% discount offer, and the chance to become an agent to help fund their club. I must have got 200 agents signed-up and the business started to grow.

HIV/AIDS is the greatest pandemic in human history. It is chronic pandemic, in the sense that its rise and fall is measured in decades. The known part of this pandemic is now three decades old, and it has several decades still to run.

I don't know why I didn't just walk-away from Los Alamos...