A list of alien beliefs, in rough order of increasing implausibility. (By aliens I mean intelligent agents whose origin lies not with conventional humans or their contemporary technology, as opposed to agents whose origins are non-human / extra-terrestrial / extra-dimensional / extra-temporal / supernatural.)
- Alien craft/effects occasionally get observed, esp. by pilots/military.
- Government conceals definitive evidence of alien activity on Earth.
- Aliens mutilate farm animals and/or create crop circles.
- Alien tech is hypersonic / transmedium, defying our understanding of fluid dynamics.
- Alien tech is hyper-G / anti-gravity, defying our understanding of gravity/momentum.
- Aliens have abducted humans.
- Government possesses alien artifacts/bodies.
- Government possesses working alien technology.
- Government has communicated with aliens on Earth.
- Government cooperates with aliens on Earth.
- Governments/media are controlled by secret global group(s) with alien awareness/tech.
- Aliens have significantly influenced human history.
- Aliens have significantly influenced human evolution.
- Aliens have been in conflict with each other over Earth.
- Aliens have created alien-human hybrids.
- Aliens have installed hybrids as past or present important humans.
- Aliens have telepathy.
- Aliens have shape-shifting.
- Aliens have teleportation or faster-than-light travel.
- Aliens have time travel.
