“ he is not only dull in himself , but the cause of dullness in others ” ( samuel foote ) “他不仅仅是自己愚蠢，而且是引起他人愚蠢的原因” （塞缪尔?福特） 。
3.
More engineer than mathematician , delamain was delighted with its portability , writing that it was “ fit for use on horse backe as on foote 德莱门其实比较接近工程师而非数学家，他很欣赏计算尺容易携带的便利性，在文中提到它在骑马或是走路时都很好用。
4.
Brain foote distinguishes it with prototype phase , expansionary phase , and consolidation phase [ 12 ] these three phases are also go with the process of software envolution and the enhance of reuse degree Brainfoote将其分为原型阶段、扩展阶段和巩固阶段三个阶段。这三个阶段也就是软件不断演化( evolution )和复用( reuse )程度不断提高的过程。
