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Using a real-life brand or famous name actually subtracts from your story. If you invent your own world-class practitioner, you can hype him as the world's best, better than your real life one, un...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/36752 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/36752 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
Using a real-life brand or famous name actually subtracts from your story. If you invent your own world-class practitioner, you can hype him as the world's best, better than your real life one, unknown to any but the extremely rich, or the up and coming rival of your RL guy. Your RL guy will be beaten someday, by death or a rival or changing styles. Your fictional world champion need never die. And you'd have to explain the fame either way for readers that do not keep up with who's hot and who's not in business fashion.