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George Mack
George Mack is a British entrepreneur, writer, and marketing strategist best known for popularising the concept of 'High Agency' - the belief that you control your own destiny - and for building The Ad Professor into a platform reaching 300+ million people. Through his Substack newsletter (70,000+ subscribers), podcast appearances on Modern Wisdom and My First Million, and a Twitter following of 300,000+, Mack has become one of the most influential thinkers on mental models, decision-making, and entrepreneurship online. He co-founded the marketing agency Multiply, which has worked with startups backed by Stripe, Y Combinator, Sequoia, and LVMH, and is known for viral ideas like the 'Cocaine Phone vs. Kale Phone' two-device productivity protocol.
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