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The object's approximate age can then be figured out using the known rate of decay of the isotope.
For organic materials, the comparison is between the current ratio of a radioactive isotope to a stable isotope of the same element and the known ratio of the two isotopes in living organisms.
The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.
Although "hipsterism" is really a state of mind,it is also often intertwined with distinct fashion sensibilities.Despite misconceptions based on their aesthetic tastes, hipsters tend to be well educated and often have liberal arts degrees, or degrees in maths and sciences, which also require certain creative analytical thinking abilities.Consequently many hipsters tend to have jobs in the music, art, and fashion industries.Hipsters are also very racially open-minded, and the greatest number of interracial couples in any urban environment are typically found within the hipster subculture.Although hipsters are technically conformists within their own subculture, in comparison to the much larger mainstream mass, they are pioneers and leaders of the latest cultural trends and ideals.
It is a myth that most hipsters are unemployed and live off of their parent's trust funds.