<prompt> Translate the following text to EnglishKwa upande wa chini, curve ya chini inaonyesha kwamba kwa kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini cha kiwango cha chini.  <response>: The bottom curve shows that at 0 percent inefficiencies, the net scale benefit is -2. 