Some claim they have no value, others that they are central, while many simply conclude there is no clear answer but, since they do no harm, they use them just in case.
Neki tvrde da nemaju vrednost, drugi tvrde da su veoma bitni, dok mnogi jednostavno zaključuju da ne postoji jednostavan odgovor ali, jer ne nanose nikakvo zlo, koriste ih za svaki slučaj.