What was wrong with the traditional rocker that at some point someone decided, "We need to complicate this as much as possible. And if we confuse anyone in the future with our design, all the better!"
The Victorian era loved inventing a very specific solution to everything, not only problems. They invented a ton of special tools to eat every type of aliment, so complex sometimes that you needed a notice with your salad fork. So yeah a madlad wanted to show what he could do and didn't stop to check if he should.
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