How to tell if someone is not human?

As technology continues to advance and science delves deeper into understanding the complexities of life, a question that has remained unanswered for centuries has resurfaced: how can we tell if someone is not human? The truth is, it’s not always easy to distinguish humans from non-humans. In fact, some creatures can mimic humans so convincingly that you may not even realize they’re not one of us.

If you’ve ever wondered whether your neighbor or coworker might be an alien in disguise, don’t fret! We’ve got you covered. Follow these tips and tricks below on how to identify non-human beings among us.

Look for Physical Signs

One of the quickest ways to spot a non-human is by examining their physical features. While some extraterrestrial beings closely resemble humans, there are often subtle differences that give them away:

  • A lack of fingerprints – while this isn’t always indicative of a non-human (some people simply have very faint prints), it’s worth noting if someone never leaves any behind.
  • An unusual pulse or heart rate – most humans have a resting heart rate between 60-100 beats per minute; anything markedly higher or lower could indicate that something fishy is going on.
  • Pupil shape – as strange as it sounds, paying attention to the shape and size of pupils could reveal an alien in our midst. Some species have slitted pupils like cats rather than circular ones like ours.
  • Abnormally cold skin – again, this doesn’t necessarily mean someone’s an alien since conditions like hypothyroidism can cause cold hands/feet but paired with other characteristics mentioned here…
  • Unusual eye coloration such as yellow eyes (possibly indicating Jaundice) which seem more natural on pets than people.

Overall though none would definitively prove someone was not human!

Odd Eating Habits?

Another way to tell if someone isn’t human is by examining their eating habits. For instance, certain creatures don’t eat in the same way as humans do:

  • Eating unusual foods -though some might argue even you are guilty of this’, creatures may consume food that’s entirely foreign to us or not at all.
  • Lack of appetite altogether – while occasional short-term appetite loss is common for people, animals who demonstrate long-term avoiding food could signify an issue.

They Don’t React/Emote Properly

For the most part, humans tend to react uniformly in particular situations. Not so with non-humans!

If you’re trying to determine whether your coworker or friend is from another planet, pay close attention to how they react (or don’t react) in various scenarios:

  • Awkward laughter? Non-human entities attempting humor usually fail miserably since it’s beyond them;(Side note: a robot can be programmed with jokes though it would need access to advanced device tools)
  • Inability to recognize sarcasm – It seems other worlds would have trouble processing sarcastic comments too!
  • Unuttered emotions – understanding what normal human response should look like is key here as imitations only give limited emotion such as basic fear rather than surprise sadness/happiness anger/joys)

It’s usually subtle things that stand out when following these clues but sometimes there are glaring differences between them and examples include being unfamiliar with customs/traditions/language spoken — a handy tip indeed!

Check Out Their DNA

One final option for exposing alien life among humankind comes down into the bizarre world of genetics/dna (Note – this requires invasive measures which we cannot under any circumstance condone):

Testing samples taken from hair/skin/tissue provides significant insight into someone’s ancestry/genetic makeup-

Absence/presence of traditional markers called HLA’s recognized by our immune system liken immunity function signature imprint of individuals kind.

Sadly, this testing remains out of our reach for now…


In conclusion, telling if someone is an alien in disguise isn’t a simple feat. Creatures from other worlds come in all shapes and sizes – some can be identifiable through their physical features or eating habits while others might expose themselves with awkwardness during social interactions or unfamiliarity with environs/speech patterns among many factors.

Regardless of how good you are at spotting non-humans though, it’s essential always to keep an open mind. Just because someone acts differently or looks unusual doesn’t necessarily mean they aren’t human; likewise,’ just because they resemble us’ it does not definitively confirm their identity either! Always treat everyone with kindness and respect – as far as we know, humans remain the only sentient beings around these parts -or do they?

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