In another experiment , 800 typists recruited through amazon . Com 's mechanical turk service rated whether made-up words felt positive or negative .

在另一个实验中，实验者通过亚马逊的土耳其机器人雇来800名打字员，让他们评估新造的单词是感觉积极还是消极。

For instance , typewriters used to jam if people typed too fast , so the manufacturers designed a keyboard that would slow typists .

例如，早先的打字机如果输入速度太快就会卡壳，于是厂家便开发出键盘，但打字员的速度确因此而变慢。