Philip Low’s brain-mapping breakthrough made him a billionaire.

Now a blistering Facebook post has thrust the neuroscientist into a new fight – with his old friend, Elon Musk.

Low called Musk a “narcissist with an obsessive lust for power” in a post shared nearly 50,000 times before it mysteriously vanished.

Now Low is claiming X and other social media platforms are silencing dissent, and has set aside US$250 million to test in court whether their promises of “free speech” are really false advertising.

Today, veteran UK correspondent and contributor to The Saturday Paper, Paola Totaro, on the neuroscientist taking on Silicon Valley, and attacking the character and credibility of the world’s richest man.

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You can read more of this reporting in this weekend's edition of The Saturday Paper.

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Guest: UK correspondent and contributor to The Saturday Paper, Paola Totaro.

Photo: AP Photo/Susan Walsh