Automating tacit interactions is difficult because of the inherentvariability; that is, users try to do something different every time.
自动化隐含交互很难实现,这源于其固有的变化性,也就是说,用户每次都尝试做不同的事情。
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Because of the inherent risk of variability in microbiology data, reliability and reproducibility are dependent on the use of accepted methods and adherence to good laboratory practices.