Specialists from great Britain have established that blind people have extraordinary skill. As it turned out, even when fully blind person is able to determine the growth of others.
In total in research took part more than a hundred of the blind volunteers. As a control group, the researchers took people with normal vision. Subjects were first asked to determine the growth of 30 pairs people by their voices. Was only required to say which of the pair above, and one below.
The experiment did a better job blind volunteers. Apparently, the absence of one of the most important analyzers forces us to develop other sensor systems, for example, the organs of hearing.
Interesting. Blind people was much more difficult to determine the growth of women's voice. This part of the task blind sighted coped worse.