A second problem is the metaphor alert - a strained metaphor is about to be attempted all weak - stomached readers are advised to hold on or jump to the next paragraph necessary entropy of a closed language design which is constrained to reuse constructs that are both too similar and significantly different and result in a dissipation of the programmer s energy in the heat of a desert mirage 另一个问题是（比喻警报下面将尝试一个牵强的比喻，建议所有忍耐性不好的读者就此打住或跳到下一段落）封闭式语言设计中所必然产生的平均信息量运动。这种封闭式设计跳不出重用既相似又明显不同的结构的桎梏，导致程序员的精力白白耗费在炽热的沙漠蜃景上。
