Pseudoscience and quackery

[Donnieclark]

Hi,

A recent thread in CE, together with a few here in Science has got me thinking about hard to believe science claims. It amazes me that intelligent people buy into these conspiracy theories. So heres a thread to post your pet pseudoscience theory and whether you believe it or not. Here are some to get you started:

Practical antigravity - to propell an aircraft.
Affordable cars that run on water alone.
Benchtop cold fusion which can practically generate electricity.
Faster than light space travel.

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