On the other hand, it appears to be necessary for research groups, scientific journals, conferences and companies to present or market themselves as belonging specifically to one of these fields and, hence, various characterizations which distinguish each of the fields from the others have been presented.
S druge strane, neophodno je istraživačkim skupinama, znanstvenim časopisima i tvrtkama da se predstave kao pripadnici jednog od tih polja i, stoga su definirane razne karakteristike koje razlikuju jedno polje od ostalih.