In rapidly changing society, manufacturers in almost all the industries are forced to invent new products in a shot term. To live up to market's demand, those companies are managing to release new products by many ways. One of them is omitting experimental procedures. Surely, there would be experiments which are not efficient. But, in some cases, mandatory experiments are omitted ,and then it causes fatal accidents after mass-production.
It would be important to shorten time to invent new products ,but it's more important to keep safety. That's what I want to tell all the manufacturers.