Biometry, or Biometrics, the application of statistics to the study of living things. Biometry is especially useful in studying growth or biological similarities and differences. It is a vital part of insurance, public health, forestry, and many other fields.
If someone tells you he or she possesses the secret of happiness, that person may also have a bridge to sell you. The things that make some people happy may lead to utter despair in others. As it turns out, humans may have to look into themselves to find happiness.
It doesn't take long to watch a movie and figure out who the evil genius is. In real life, though, figuring out if someone made an intelligent decision to do harm is a lot more slippery.