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With his fuzz of chaotic grey hair and love of philosophy, Palantir boss Alex Karp isn't your average tech bro.
Not least because he recently published a pro-West manifesto that has been described as the "ramblings of a supervillain".
His highly-controversial data analytics firm is known by critics as "the world's most dangerous tech company" - so what does it actually do and why does it sit right at the heart of the NHS?
Niall is joined by Sky's technology correspondent, Rowland Manthorpe, for the latest episode of our series looking at the most important people in tech that you might have never heard of.
Have you got a question for Niall? Email us: why@sky.uk
(c) Sky News 2026: Why the NHS is working with 'the world's scariest CEO'
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