Computers are very useful and helpful because they can work faster than men and make fewer mistakes.

电脑非常有用，因为它们比人工作得更快，犯得错误更少。

youdao

But nobody's perfect so it's impossible not to make a mistake. As great as computers and smartphones are, even they can make mistakes!

但是没有人可以完美无缺，永远不犯错误是不可能的。

youdao

Shipp acknowledges that these systems can make mistakes but says the computers aren't there to take over for humans but to assist investigators by weeding out useless information.

CNN: After Boston: The pros and cons of surveillance cameras