With the help of Facebook can figure out how the users interests change over time, the preferences in communication and much more. Such a conclusion was a mathematician and programmer Stephen Wolfram. He published a paper on the calculation of "trajectory" of life, using Wolfram Alpha data and Facebook.
Human life scientist estimated by various characteristics, such as the number of virtual friends at different ages. It was found that the number of "my friends" grows older man and peaking to 19 years, further reduced. As well, the statistics showed that the older the person, the more he is interested in health, dramatically increasing interest in the weather, but strongly decreases the interest in video games and fashion.