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Based on more than 8000 autopsies of male and female patients without brain diseases the normal brain weight of adult males and females in relation to sex, age, body-weight, and body-height as well as Body Mass Index were calculated. The average brain weight of the adult male was 1336 gr; for the adult female 1198 gr. With increasing age, brain weight decreases by 2.7 gr in males, and by 2.2 gr in females per year. Per centimeter body height brain weight increases independent of sex by an average of about 3.7 gr. Body Mass Index is of minor importance and only relevant in males. Based on these data the independent variables, age and height, were for the first time combined in a nomogram for the calculation of brain weight. The mathematical functions were integrated in a computer program which facilitates the calculation of normal brain weights in individual cases.

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This paper analyses a new framework for decision-making in e-democracies that exploits the power of Internet based public knowledge, which is called briefly e-cognocracy. This is not a procedure to improve technical aspects using the Internet (e.g. e-voting); it is rather a procedure to add a new quality to the democratic system by using the network. This proposed system of e-cognocracy would allow those who are interested to solve highly complex problems by participatory decision-making. Furthermore, we suggest the multicriteria framework for the modelling and resolution of such complex problems. Similarly, using the analytic hierarchy process (AHP) approach, we propose decisional (analytic and informatic) tools for searching the knowledge -relevant for the decision-making process.This knowledge of patterns of behaviour, trends, opportunities, decisions and stylised facts will be the starting point of a consensus-reaching process, which is aimed to effectively solve problems of high complexity of the Internet society.