The essential features
of an extra-terrestrial

David E. Jacobs is an historian who has analysed the stories of more than 60 abductees. The abductees did not know each other and had not heared of each others' experiences.
Yet, under hypnosis, the alien figures they described were so alike that Jacobs could set down common denominators and describe the essential features of an extraterrestrial.
They occur so frequently, and are so stereotyped, that they call them the Grays.

A gey is 3½ to 4½ ft tall, with a disproportionately large head, like a pear upsidedown.

They are hairless, have leathery skin, only the smallest protuberance for a nose and lipless mouths that do not move.

They communicate by telepathy.

The most striking feature is the eyes: black, enormous, almond-shaped, compelling. They do not blink, nor do they move in their sockets. They are like goggles. Yet, starting into them, they seem to have enormous power - to communicate, to reassure or to frighten.

Greys are usually naked, but no genitals are seen. The chest does not swell as the breath.

These beings are frail, with thin limbs and no bone structure or musculature. They have three fingers, with no opposable thumb.

A secound type of is also reported: the Nordic. It is humanoid, taller and has blond hair. Americans see 12 Greys to every Nordic. In Europe, though, the Nordics outnumber the Greys.
Some abductees feel that the Nordic are female. One woman even reported that a Nordic had tried on her high-heeled shoes. That is either evidence of derangement or it is a detail that no one could possible have made up.
One bizarre detail: to Britons, Greys smell of cinnamon or rotting leaves; in America, the scent is of ammonia, sulphur, lemons and almonds.