if you dont know anything about it then yes but if you have friends that have ridden the ski and they have told you about how they ride and how well they work in certain aspects then i think it is okay, or if you have flexed them in a shop you can generally tell the flex just from that or on the companies websites list stiffness. lots of people have general information on skis and i think its great that they share it with others who ask for help. if your making stuff up then its a whole different story, but otherwise people tend to know lots about different types of skis through reading reviews and through word of mouth from other riders. but thats just my opinion.