Naff all since about 1970
Hahahaha!
He says on the internet.. hehehehe 🙂
Since 1970 we’ve invented tons of incredible things, they just aren’t as schoolboy wow-factor as concorde. Which is a good example – we built it, we ran it, but not enough people wanted it. People realised that it was too expensive and impractical to fly people to New York for a few hours of meeting when you can either take a couple of days and do it in luxury, or just not do it at all. Because now you can work on planes and whilst travelling, or you can teleconference. Both of which use technology that make Concorde look like the Cutty Sark.
The challenge isn’t to make stuff, it’s to make stuff affordable and viable. Otherwise you’re just chucking money away.
but now it makes me ask why they are shaped the way they are
Well you need fast flowing water to smash the poo over the U bend. So you have to have a small hole in the bottom to funnel water through. In my experience the smaller the hole the better it flushes and the less water you need.
Of course there’s the American system where you do indeed drop bombs into a large pool of water. It can still leave skidmarks on the bottom of the pool though, and you get a lot more splashback on your anus.