I used to think that our nextdoor neighbors had the best dog in the world.

我曾经以为，我们的隔壁邻居家的狗是世界上最好的狗。他们的狗会唱歌，会切换电视频道。

Many people are familiar with the tech company Nextdoor.

许多人都熟悉科技公司 Nextdoor。

I'm already seeing that on communities like Nextdoor, and on Facebook groups.

我已经在 Nextdoor 等社区和 Facebook 群组上看到了这一点。

Yet, Nextdoor soon found that they had a problem with racial profiling.

然而，Nextdoor 很快发现他们在种族定性方面存在问题。

So Nextdoor provided them with a definition and told them that it was strictly prohibited.

于是 Nextdoor 给他们提供了一个定义，并告诉他们这是严格禁止的。

So Nextdoor had a choice to make, and against every impulse, they decided to add friction.

因此，Nextdoor 不得不做出选择， 他们克服每一个冲动，决定增加摩擦。

So the cofounder of Nextdoor reached out to me and to others to try to figure out what to do.

因此，Nextdoor 的联合创始人联系了我和其他人，试图弄清楚该怎么做。

Most of you have seen those signs in airports and in metro stations, " If you see something, say something." Nextdoor tried modifying this.

你们中的大多数人都在机场和地铁站看到过这些标志，“如果你看到了什么， 请说些什么。 ” Nextdoor 尝试对此进行修改。

" If you see something suspicious, say something specific." And using this strategy, by simply slowing people down, Nextdoor was able to curb racial profiling by 75 percent.

“如果你看到可疑的东西， 说些具体的话。 ” 使用这种策略，通过简单地放慢人们的速度， Nextdoor 能够将种族定性减少 75%。