The people who are closest to a thing are often the most wary¹ of it.

对一件事物最了解的人，往往也对其最警惕。

Technologists know how phones really work, and many have decided² they don't want their own children anywhere near them.

技术专家们知道手机的运作原理，所以许多人拿定主意，绝不让自己的孩子靠近手机。

A wariness³ that has been slowly brewing⁴ is turning into a regionwide consensus⁵ in Silicon⁶ Valley: The benefits of screens as a learning tool are overblown, and the risks for addiction⁷ and stunting⁸ development seem high.

在硅谷，一种一直在缓慢发酵的警觉正在变成地区性共识：屏幕作为学习工具的好处被夸大了，上瘾和阻碍孩子发育的风险似乎很高。

Tim Cook, the CEO of Apple, said earlier this year that he would not let his nephew join social networks.

苹果首席执行官蒂姆·库克今年早些时候表示，他不会让自己的侄子上社交网络。

Bill Gates banned cellphones until his children were teenagers, and Melinda Gates wrote that she wished they had waited even longer.

比尔·盖茨则禁止他的孩子在十几岁前使用手机，而梅琳达·盖茨曾写道，她希望他们可以再晚一些给孩子手机。

"On the scale between candy and crack cocaine⁹, it's closer to crack cocaine," Chris Anderson, the former editor of Wired, said of screens.

连线》前主编克里斯·安德森这么形容屏幕产品：“在糖果和快克可卡因之间，它更接近后者。”

"We thought we could control it. But it's beyond our power to control. This is going straight to the pleasure centers of the developing brain."

“我们以为能控制它，但它已经超越了我们的控制能力。它能直接抵达正在发育的大脑的愉悦中枢。”

John Lilly, a Silicon Valley-based venture capitalist with Greylock Partners and the former C.E.O. of Mozilla, said he tries to help his 13-year-old son understand that he is being manipulated by those who built the technology.

在硅谷工作的格雷洛克合伙企业的风险投资人、摩斯拉的前CEO约翰·里利表示，他试图帮助自己13岁的儿子理解，他受到了那些打造这些科技产品的人的操纵。

"I try to tell him somebody wrote code to make you feel this way -- I'm trying to help him understand how things are made, the values that are going into things and what people are doing to create that feeling," Mr. Lilly said.

里利说：“我尝试着告诉他，有人专门写代码，就是为了让你有这种感受--我在试图帮他理解这些东西是如何被打造出来的，这些东西其中的价值观，以及为了创造出这种感觉人们都做了什么。”