I was technically in Czechoslovakia for the Velvet Revolution, but I was at the time slightly preoccupied sorting my shapes and colours and potty training.

Glad to see I’m getting a second chance.

Calculus is a specific field of mathematics, mostly to do with limits, integrals and derivatives. Those all feature very heavily in working out loads and stresses.

But it’s unfair to say the Roman didn’t have calculus. It wasn’t formal calculus, but they absolutely had mathematics, and the Greeks worked out the exhaustion method a century before the Via Appia was even started.

You don’t need calculus to do some very impressive building, you can go very very far with experience, rules of thumb and basic maths. Hell, ask any civil engineer and they’ll gladly show you some common formula that makes physicists cry.

Ok, visualize it like this:

Draw yourself, with a small mirror at head height, a meter away. Draw your reflection at the same distance from the mirror on the other side.

Now do that again, but place the mirror 10 times further. Then draw lines from your eye, to the edge of the mirror, and to the reflection.

You’ll reach the same point on your reflection.

Edit: or let the BBC do it for you; https://www.bbc.co.uk/bang/images/dallas_mirror_diagram_large.gif

Which, in older machines, might happily pump a fuckton of gaseous helium into the room, potentially creating overpressure and squeezing the door shut while people suffocate.

but its a liberal right

excuse me? It’s only “liberal” in that everyone has the right to kill muslims.

Yeah, most early communism was VERY egalitarian for women (not really sure about homosexuals, those don’t tend to feature much in 19th century writings), but that got rapidly stomped into the ground later.

And as much as tankies love to preach you need to read the source material, they mostly don’t.

Ok, technically correct, in that drones are aircraft. But it’s not the greatest description, and their main use is anti-drone, with a little anti-helicopter thrown in.

The ZSU-2 om which this is based was anti-aircraft when it was developed, in 1949, but that’s not a thing anymore today. Works great on drones though!

Anti-drone? You’re not going to hit any jets with that, unless you’re supremely, insanely lucky.

And if you must, just grab the cheapest supermarket multivitamins and take only one. It probably won’t do much, but at least you’ll only waste a few pennies per day.

Humans are anywhere between 50 and 75% water, with an average around 60. The average dutch male weighs 90 kilos and wears size 43. So that means his shoes should be able to hold about some 36 kilos of stuff. Of course, much or that weight is in carbon, which is twice as heavy as water, so let’s call it 18 liters of stuff.

Now, googling for volume of a boot is really hard, thanks to hard drives and car trunks, but I doubt I can fit a full bucket into even a large boot.

I love that “the right” is someone wearing a mask.

People just don’t understand mirrors.

I did a horrifying experiment in uni with a mirror on the wall, and asked people to point at where they thought they could see their reflection . The obvious answer is of course “when you’re next to it”. A terrifyingly large number of people at a University assumed they could see themselves at a 45 to 60 degree angle, so several step before they actually reached the mirror.

Some of them were even shocked when they walked along it.

Uhhh no, that’s not how angles work.

The further you get away from a mirror, the “further away” the reflection is. You will never see your whole body in a hand mirror, even if you put it on the moon.

As long as it’s perfectly flat.

Most dangerous thing anywhere is cars, tbh.

We already HAD a desert storm 2 in 2003. subtitle: “Iraqi Freedom”

Iran uses russian missiles?

What russian missiles?

Anduril?

Well, this is going to be the first time a fantasy writer’s estate is going to sue the shit out of a defense producer.

“There are no russians in Syria!”

I love that there’s a wikipedia page on this.

I hate that doing the wrong thing consistently automatically makes it the right thing.