Interestingly enough, when my sister was in South America, she saw plenty of places where the "vegetarian" option contained chicken. Apparently "sin carne" meant no red meat. Vegetarianism by choice was pretty rare, which supports my theory that you find vegetarians where it's either mandated by religion, or where people are affluent enough to chose not to eat meat.

I prefer the term level 5 anti-vegan - I only eat food that casts a shadow.

I imagine he's referring to the idea that certain methods were seen as "ungentlemanly" and against the idea of chivalry and fair play. Previous examples were submarines and the rifle. The former because it was a weapon that hid from its enemies. The latter because it was one of the first times* that a weapon was used to aim at an individual from a distance - previously it was considered impractical, so mass volleys were used instead.

* Yes, archers may have done this in the past, but they tended to use volleys too. The Rifle Brigade was one of the first regiments to do this specifically.

Also, many countries continued to use enigma machines under licence after the war precisely because they were still believed to be unbreakable.

But do you need to pay royalties if you're only doing R&D?

Yes it is, it has a half life of 4.468 billion years and undergoes alpha decay.

Apparently the poachers don't really hunt the rhinos - they just set snares and indiscriminately catch/kill them. So it may not be as effective as initially thought.

Why would I eat salad? It's what my food eats.

I had to stop chewing my finger nails because it kept giving me an erection, you insensitive clod.

Have you been on eBay recently?

While tempting, it would probably be a bad idea to send a cheerful reply of "I had no idea about that, but thanks for letting me know"

Which is what a lot cheap tilt switches are nowadays. In the UK - because of mercury restrictions - mercury switches are quite expensive, unless you get the dodgy eBay ones. I was looking at some for an Arduino project, and decided I didn't quite trust the look of them.

I would have said politicians, but then I remembered that they're pretty much the same people.

I wasn't aware of that - it'll be interesting to see how they get that to work. Sometimes I wish I actually made it into the aerospace industry - they do some pretty cool stuff.

Other components -such as gas turbine engine blades - are required to made from a single crystal of metal, for strength and resistance against thermal creep. If I recall correctly, the crystal is essential "grown" in the manufacturing process. It's unlikely that 3d printing will ever suffice for certain components. That said, there are thousands of components that could benefit from 3d printing.