I see , was going to throw on a black jeans instead but change my mind last second . I guess I made a mistake . Perhaps a pair of white NMD should be better ? <| sep |> It ' s an industry that directly produces billions of dollars . Indirect ancillary stuff overshadows that even more . <| sep |> According to Pottermore page on Owls , traits like owls learning very quickly , and being able to trace and track the witch or wizard for whom their letters are intended might be because of owls possessing an innate talent for magic or selective breeding by wizards for these traits . <| sep |> You also have to factor in cost . The cost of making something like this might have been impractical before . It might be that due to cheaper materials and more efficient manufacturingand other factors that this solution is now possible . Basically all designs could be better . Cost is a huge factor though .