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Solution to the grandfather paradox

3 minutes

How quantum superposition could unravel the ‘grandfather paradox’

The ‘grandfather paradox’ has long been one of the most popular thought experiments in physics: you travel back in time and murder your grandfather before he’s ever born. If you’ve killed your grandfather, you’ve prevented your own existence, but if you never existed, how could you have committed the murder in the first place? Some physicists have avoided the question by arguing that backwards time travel simply isn’t consistent with the laws of physics, or by asserting a ‘many worlds’ interpretation of the Universe. But could the concept of quantum superposition remove what seems so paradoxical from this tale of time travel and murder once and for all?

Video by MinutePhysics

Video/Music

What happens when rock stardom doesn’t quite work out?

10 minutes

ORIGINAL
Video/Neuroscience

A happy life is built on pleasures such as sex and food, but also company and variety

7 minutes

Video/Demography & Migration

On the US-Mexico border, loved ones on both sides can see each other but cannot touch

12 minutes

Essay/Political Philosophy

Is taxation theft?

The assumption that you own the contents of your pay-packet, although almost universal, is demonstrably confused

Philip Goff

Video/Philosophy of Mind

It’s easy to get caught up in constructing our selves, but what does it cost us?

3 minutes

Idea/Ethics

A ‘humanely’ killed animal is still killed – and that’s wrong

Anna E Charlton & Gary L Francione

Essay/Philosophy of Mind

Change becomes you

Being the same person over time is not about holding on to every aspect of your current self but about changing purposefully

Kevin Tobia

Idea/Metaphysics

Imagination is a powerful tool: why is philosophy afraid of it?

Amy Kind

Video/Ethics

Pain leads to empathy and self-preservation: should we make robots ‘feel’ it?

12 minutes