Imagine you're the guy who invented SawStop, the table saw that can detect fingers touching the saw blade and immediately bury the blade in an aluminum block to avoid cutting off someone's finger. Your system took a lot of R&D, it's expensive, requires a custom table saw with specialized internal parts so it's much more expensive than a normal table saw, but it works, and it works well. You've now got it down that someone can go full-speed into the blade and most likely not even get the smallest cut. Every time the device activates, it's a finger saved. Yeah, it's a bit expensive to own. And, because of the safety mechanism, every time it activates you need to buy a few new parts which aren't cheap. But, an activation means you avoided having a finger cut off, so good deal! You start selling these devices and while it's not replacing every table saw sold, it's slowly being something that people consider when buying.
Meanwhile, some dude out of Silicon Valley hears about this, and hacks up a system that just uses a $30 webcam, an AI model that detects fingers (trained exclusively on pudgy white fingers of Silicon Valley executives) and a pinball flipper attached to a rubber brake that slows the blade to a stop within a second when the AI model sees a finger in danger.
This new device, the, "Finger Saver" doesn't work very well at all. In demos with a hotdog, sometimes the hotdog is sawed in half. Sometimes the saw blade goes flying out of the machine into the audience. After a while, the company has the demo down so that when they do it in extremely controlled conditions, it does stop the hotdog from being sawed in half, but it does take a good few chunks out of it before the blade fully stops. It doesn't work at all with black fingers, but the Finger Saver company will sell you some cream-coloured paint that you can paint your finger with before using it if your finger isn't the right shade.
Now, imagine if the media just referred to these two devices interchangeably as "finger saving devices". Imagine if the Finger Saver company heavily promoted their things and got them installed in workshops in high schools, telling the shop teachers that students are now 100% safe from injuries while using the table saw, so they can just throw out all safety equipment. When, inevitably, someone gets a serious wound while using a "Finger Saver" the media goes on a rant about whether you can really trust "finger saving devices" at all.
Anyhow, this is a rant about Waymo vs. Tesla.