Philosopher's Zone

Ever since AI was founded in the 1950s, people have talked and written about 'intelligence' as though we all broadly agree on what that word means. But there's considerable debate on that score, and among the debaters are philosophers - like this week's guest - who question the degree to which machines can be said to be intelligent at all, and think that claims of intelligence can all too easily deflect attention from the real ethical issues around AI.
Guest: Tim Crane, Professor of Philosophy at the Central European University (CEU) in Vienna, Austria
Producer: David Rutledge

GWF Hegel (1770-1831) wanted to construct nothing less than a complete explanation of reality - nature, consciousness, art, history, politics, the lot - based on a single self-explanatory idea. Whether or not he succeeded is an interesting question (spoiler: he didn't), but more interesting is the question of why philosophy has become so much less ambitious since then, and what we can learn from Hegel today.

Philosophers have traditionally thought of grief as something that attaches to immediate loss - the death of a loved one, something terrible that's happened to us personally. But as the environmental crisis continues to wreak havoc on human and non-human lives, the philosophy of emotions needs a concept that captures a response to loss that perhaps hasn't happened yet, or loss that affects other people we may never meet: eco-grief.

There's something about space that's always captured the human imagination, but what happens when space begins to capture the imagination of billionaire tech entrepreneurs? In the past, we've visited space for scientific purposes, but now the grand vision is colonisation, permanent human settlement on the Moon, Mars and even further afield, with such ventures along the way as asteroid mining, which promises to deliver untold riches. The technical challenges are immense - as are the ethical ones.

Commercial surrogacy - the practice of paying someone to gestate your child and then hand it over when it's born - is banned in Australia, but it has its supporters. Defenders of commercial surrogacy argue that it should be legal for someone to receive payment for the labour of carrying a child, on the grounds that surrogacy constitutes a legitimate form of work. But are there some things that just shouldn't be for sale? This week we're testing the arguments.