You can set up your printer in the same area you work in (if you work from home), and audio fire alarms can be used
My father used a web camera and a remote controlled solid state power relay on his tabletop CNC that he locked away in a separate room so he can look after it
Of course, but many, many companies never leave that state in the age where the biggest investment strategy is dumping hella cash into a startup in hopes that it overtakes (monopolizes) the industry but may never be profitable. And many people thought that Tesla would never be profitable, it sure looked like it for a very long time.
If I recall correctly, Tesla was actually cash-negavite for like half a decade after Musk bought it, surviving off investors and SpaceX's success, I remember it was very big news when it finaly went cash-positive and subs like WSB were all over r/all
I'm pretty sure it's either a myth (that it doesn't work) or some US-centric thing, because when I worked as a delivery guy, I used to go through probably hundreds of different elevators in high-density residential buildings, and most of them have doors that stay open very long to allow baby strollers and heavy appliances to be placed inside, and on pretty much all of these the door closing button works, immediately closing the door
This is what I and many other programmers have done (not the removal, but fake delays), because it improves user experience, actually:
1.When the user clicks a button that should take long in their mind (like uncompressing a zip file etc) but is actually fast, it might seem like something is wrong and it didn't work
2.When the user transitions between layouts of the application, if it loads everything too fast it will look too abrupt, a fake delay will be made here if a transition animation is not possible/doesn't fit
Used it every day when delivering, because there was much more detail than google maps, so I could actually see where fences and gates are. Used Waze to drive and OSM to walk.
It happens often in media, but real scientists don't rely on what they think animals think, instead using objective data like brain activity scans, heartbeat rates etc, often presenting pure data without a conclusion on what they think the animal feels. Those studies will then come to media, where the interviewed scientists will give their thoughts on how they interpret the results, even if it's obvious that the animal likes/dislikes something. These also exist in media.
Edit: I also want to add that many things are straight up visibly harming the animal and you don't even need any conclusions. For example if you house a hole-dwelling spider without enough substrate to dig, it will stop eating. This has been confirmed many times, by many owners. It doesn't matter if it makes them uncomfortable or they feel pain from it, or they are cold, etc, because we know that they stop eating, and that's a good enough signal that something's bad.