If you are a little over 20, then at least once in your life you have thought how old age will be. Often, the prospect of the humiliating period of the withering of life functions scares us - loss of physical attractiveness, decrease in the usual mobility of the body and brain, senile diseases, etc. It seems that it is impossible to influence this process, laid down in us by nature; we have to come to terms with it, and wisely accept all...