High-tech companies such as Google and Hewlett-Packard used to pride themselves on giving their employees time to pursue their own projects. Now they are either cutting back on tinkering time or policing it more carefully. 谷歌、惠普等高科技公司过去以给员工们时间追求他们自己的项目而感到自豪,现在它们不是缩短了鼓捣时间,就是更为仔细地控制这一时间。