H0 assumes that:
- there's intelligent life out there
- that life is close enough to visit Earth
- it's interested in us enough to secretly do weird things to us
- but for some reason hides from our governments/scientists
- and manages to avoid them
- but for some reason regular people can sometimes catch it
- but never on a cellphone
- it came to that particular place and did these particular things
H1 only assumes a lot of things we already know exist and can happen (like hypothermia and scavengers) - happened at once.
H0 assumes that:
- there's intelligent life out there
- that life is close enough to visit Earth
- it's interested in us enough to secretly do weird things to us
- but for some reason hides from our governments/scientists
- and manages to avoid them
- but for some reason regular people can sometimes catch it
- but never on a cellphone
- it came to that particular place and did these particular things
H1 only assumes a lot of things we already know exist and can happen (like hypothermia and scavengers) - happened at once.