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I feel like anything that doesn't come easily is technical. If you can just throw a trick without thinking about it its not technical, but if you have to think about how you're going to throw and really spot the landing thats technical to me
Introducing more aspects to the tricks that could cause you to fall makes it more technical. Adding screamin seaman, another spin, a butter, all these things make a trick more technical because they make that trick harder to execute.