"I don't really know what there is to explain. Virtually every facet of roller coasters hinges on perceived danger, adrenaline, etc.....
why else would we ride coasters? the whole point is the thrill, the rush, and that is purely psychological".
That certainly sounds good. But that is not why I ride coasters. I ride coasters for steep drops and G-forces. There isn't much psychological about that...
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Too much is simply NOT ENOUGH...