I can't speak for Europe / England and their repair laws, but everything in America is required to be approved by the FAA for use in aviation, and usually you can't change things after the aircraft is certified. It's one reason why aircraft are so expensive to repair. An airplane with a 12V battery from 1989 requires that same type of 12V battery for a replacement. Sometimes the manufacturer has gone out of business. Sometimes technology has improved dramatically and they no longer manufacture that type of battery. Even if you can get a modern lithium ion 12v that would last longer under the same circumstances, getting approval can be millions of dollars and years of work. To answer your question, there are virtually no 3D printed parts in use. There might be a few experimentals out there, but nothing you are likely to encounter unless you are deliberately out there flying them.

This is the kind of nonsense people who sell ads tell to people who buy them, usually followed along with "studies" that contain an awful lot of conflicts of interest, questionable psychological findings, and bad statistics. I have no doubt that some advertising works. I can also tell you that it has unintended consequences - I do not go to gas pumps that advertise to me more than once, and I stopped going to a CVS near me because they changed their drink coolers to display ads alongside their product. People eventually become accustomed to colors, sights, and sounds of advertising and tune them out, to the point where things like the color red are actively discouraged in web design because so many advertisers used it in the early years to try and draw attention, and it is now ignored by most people.

If Google actually cared whether actual people were seeing their ads or not, they would have shut down all the various 5 minute craft and knock off channels years ago. There's basically an entire bot network of tens of thousands of accounts that operate out of Malaysia / Philippines that do nothing but copy, follow, and "watch" each others' videos for the ad revenue. Of course, if they ever did that, they would have to admit that their advertising numbers are incredibly overinflated, easily hijacked with minimal effort, and have no guarantee that any person would actually be watching them, and from there say goodbye to the people actually buying ads.

As opposed to the google search optimized sites that contain no information and exist only to serve ads, or just google's own ads?

Subject line says most of it. The new interface is awful, and if you check out the firefox reddit or their official support forums, they seem completely oblivious to everyone complaining about it. Everything takes up too much space, they've brought in less distinction and readability on tabs, and they continue to remove functionality that's been in for ages. On the rare occasion they actually respond to why something was removed, they say it was due to low usage. Gee, maybe taking something away from a drop down menu and hiding it in the about:config with a warning about how toggling those things might screw up firefox might scare most people away from using it? Or even knowing it's there in the first place? I went back to their old extended support release. Everything from 91 and on is just awful from a UI perspective. The only reason I even use firefox over chrome is because I can't login to gmail without chrome assuming I want google to know everything I do on the internet.

Good luck stopping a pi hole.

I'd be looking at a long time in jail.

How many domestic problems are the direct result of foreign propaganda?

Training. Hundreds of 737M flights each day in the states, not one crash or report of an issue. Both crashes happened in third world countries. That's not a coincidence.

I guess we'll find out what happens when you replace crazy with evil.

No. Males have more mutations because they produce exponentially more sex cells, leading to more chances for mutation. That's by far the most driving force behind mutation rates.

Yes, and it worked so well for American auto manufacturers. Detroit is so much better of a slum than Bangladesh!

While I agree that for simple use Open Office is certainly up to the task, it's become so filled with bloat and poorly optimized code that it's extremely slow to load regardless of machine. Their file translation could also use some work, as attempting to load an OO file saved as a word document can lead to some very funky documents.

Which will last exactly as long as it isn't profitable to make a virus for it. If everyone swapped to a certain distro of Linux, I'd be willing to bet you'd have major problems within a week.

Careful, overdosing can lead to both explosive diarrhea and decompression.