reminds me of Delta 3D printers. Quite genius, but seems the arms/legs/elbows of this might collide with the working surface, although the "platform" could just be made taller to compensate. Won't want it to be too heavy though, as it would lose speed.

@vil: Well, it's actually Bell herself that has a similar opinion:

https://jila.colorado.edu/~ajsh/astr2030_12/sn/Bell.html

It has been suggested that I should have had a part in the Nobel Prize awarded to Tony Hewish for the discovery of pulsars. There are several comments that I would like to make on this: First, demarcation disputes between supervisor and student are always difficult, probably impossible to resolve. Secondly, it is the supervisor who has the final responsibility for the success or failure of the project. We hear of cases where a supervisor blames his student for a failure, but we know that it is largely the fault of the supervisor. It seems only fair to me that he should benefit from the successes, too. Thirdly, I believe it would demean Nobel Prizes if they were awarded to research students, except in very exceptional cases, and I do not believe this is one of them. Finally, I am not myself upset about it – after all, I am in good company, am I not!

When the paper was published the press descended, and when they discovered a woman was involved they descended even faster. I had my photograph taken standing on a bank, sitting on a bank, standing on a bank examining bogus records, sitting on a bank examining bogus records: one of them even had me running down the bank waving my arms in the air. Look happy dear, you've just made a Discovery! (Archimedes doesn't know what he missed!) Meanwhile the journalists were asking relevant questions like was I taller than or not quite as tall as Princess Margaret (we have quaint units of measurement in Britain) and how many boyfriends did I have at a time?

While I was grade 9, I tackled a fellow 2 years my senior (G11), he must be 5~6 inches taller than me (me being 5'6" in my adulthood, while he was one of the tallest in school, though not muscular), I dislocated his shoulder TWICE, during practices. First time he was hospitalized for 4 days, the second time was kind of funny. When I dislocated his shoulder again (with an audible "pop"), the guy next to me floored him and put his shoulder back in place (with an audible "click/sploosh"-y sound, hard to describe). Obviously he was in pain, and was twisting and tossing himself, but when the pain subsided a little bit and opened his eyes and saw me just standing there, he screamed "you again!?" All I could do was thinking of those Mel Gibson "dislocating shoulder" scenes in the Lethal Weapons movies.

So, it's not about size, really, it's to know where & how to tackle a big boi.

I had my older brother give me a Mohawk in 6th grade with scissors, it was pretty mangey.
He did it again for 8th grade but used clippers. Less mange but still uneven as hell.
My Jr year in high school I went to a preppy boarding school with an 18"+ bleach blond Mohawk, it didn't go over well but didn't violate any rules so I kept it all year.
Then I let my hair grow for 8 years until it touched my ass. I really wish I had tried another Mohawk then, but I just shaved it off when it kept trying to strangle me in my sleep even braided. It might have been taller at that point than his. Wasted opportunities.

When I was about 13ish living in NJ, my friend and I decided to head down to the railroad near the Delaware river.

To get there we decided to go down the steel steps that ran down the hillside in our town. There are two flat platforms along the way and when we reached the first one we spotted a boy who, we knew from the area, coming up the steps in our direction.

His name was Ken. Ken had a mental disability but he was harmless. A friendly and defenseless kid that was about the same age as us and about a head taller. As he was coming up the steps I wondered what he would do if I punched him in the gut. A total sucker punch that he wouldn't see coming.

I knew he wouldn't retaliate so I decided I would do it.

As he got within range, without warning, I punched him right in the gut hard.

How he reacted and the painful look on his face instantly brought regret that, to this day, I still live with. Many years later I made an effort to find Ken and tell him how sorry I was for my violent, unprovoked actions that day. How much of an asshole I was and hope he might forgive me. I found out he had died just a couple of years back.

I think about how that punch may have changed him forever. How it may have destroyed his trust in people and planted a fear within him that I was responsible for.

Sometime later, when I was alone, I cried that day with that vision I saw on his face and I can still see it now and feel it in my gut as I write this.

That day had changed my life forever at his expense.

I dislocated the same teammate's shoulder twice during American Football practices back in high school (boarding school). He's 2 years my senior & about 6 inches taller than I. 1st time's dislocation he was hospitalized. The second time around, when I pop his shoulder out, 1 or 2 seconds later another teammate popped his shoulder back in right away by rushing him. After a few screams he opened up his eyes, saw me and yelled "You AGAIN!?" I didn't know whether to feel sorry or LOL... I did both. Must have the weirdest expression on my face ever.

He was a student prefect & a very good sport. I was either #1 or 2 in art class, so I gave him my best paint work as gift to make up for it. Fond memories.

That's a very interesting video. He's making lovely, handmade electronics, something you just don't see at all any more.

It's at times an almost painfully inefficient process. Robots are taking a lot of jobs from people, but I think there will always be a market for such hand made, hand crafted goods. Each one is different. They're a little wonky, a little taller, shorter, whatever. A machine would make them much better in every objective way. Faster, more consistent and more reliable. But it could never give them the charm they so obviously have.

I would say that Stalin, the Kin Jong's, Various African Tribal Genocides, and Pol Pot might disagree with your account of wholesale slaughter being reserved for the 'white' Europeans and their descendants. That is just to name a few. Also, what is a 'white' European? I mean the southern Europeans have quite a bit of Moorish blood in them, do they still count as 'white'?

All sarcasm aside, your argument is extremely flawed. Conquerors tend to lay waste to the societies they conquer, not always in terms of total lives lost, but in terms of cultural death. The reason why 'white' people are vilified for this lately is because for the past several hundred years they have been the ones expanding and taking over the regions you speak of. This is not exclusive to a skin color or originating locale, it is absolutely a core of our human nature.

I gave some examples earlier of non-European conquerors, but they are fairly recent. If we look in history at other groups, we find the same meme. The Steppe Horse Tribes were BRUTAL to cities and countries that did not capitulate. Look up "Measuring against the linchpin". That saying came from the fact that if you resisted Mongol rule, they would slaughter every male taller than the linchpin of a wagon wheel. The Aztecs and Mayans ruled southern American empires through great brutality, including human sacrifice for 'religious' purposes. Recent discoveries even indicate that it was considered a good omen if the sacrifices were crying in pain before they were to die. Remains recently found showed "All shared one feature: serious cavities, abscesses or bone infections painful enough to make them cry."

Slavery originated as early as human recorded history, if not sooner. Slavery can be traced back to the earliest records, such as the Code of Hammurabi (c. 1760 BC), which refers to it as an established institution. Slavery is rare among hunter-gatherer populations. Mass slavery requires economic surpluses and a high population density to be viable. Although slavery in some form or another existed in most European countries, it wasn't until after contact with the Arabic African slave traders that it soared in the 15th and 16th centuries.

tl;dr

You are referring to recent history to make an example while completely ignoring THOUSANDS of years of similar history. All humanity is flawed, narrowing it down to a singular group with cherry picked data is not going to persuade anyone with a brain.

Wikipedia
"The combat side stroke is a relaxing and very efficient swim stroke that is an updated version of the traditional sidestroke. The CSS is a mix of sidestroke, freestyle and breaststroke. The combat side stroke allows the swimmer to swim more efficiently and reduce the body's profile in the water in order to be less likely to be seen during combat operations if surface swimming is required. The concept of CSS has been that it can be used with or without wearing swim fins (flippers), the only difference being that when wearing swim fins the swimmer's legs will always be kicking in the regular flutter kick motion without the scissor kick. This stroke is one of the strokes that can be used for prospective SEAL candidates in the SEAL physical screening test (PST), which includes a 500-yard swim in 12 minutes 30 seconds to determine if the candidate is suitable to go to the Basic Underwater Demolitions/SEAL school.

Basics

The combat side stroke utilizes the three main fundamentals of swimming:

Balance: There are two things that affect your balance in the water - the head and lungs. Most people when swimming, especially when using breaststroke, will swim with their head up[citation needed] which forces their hips to sink down which is like they are swimming uphill and is a sign of being less comfortable. However, if the body is flat/horizontal or more parallel to the water-line it is far more effective and will allow the swimmer to feel more comfortable in the water.
Length: The taller the person is, the faster the speed through the water. As a result, it is important that the swimmer is fully stretched horizontally in the water, as this will reduce the body's drag through the water and allow a higher speed.
Rotation: In most sports, such as baseball, when the batter swings the baseball bat they will rotate the hips to increase the power of the swing. The same principle is applied to swimming. If the swimmer engages the hips and uses the body's core muscles it will increase power."

You rather nailed it.

Think about it this way. Stack the corn trays just once and you just doubled your output for a given area.

You're right about getting less mileage from taller crops. But every vertical layer would in theory still double the area you have to work with each time you added one.

Scale this up to a skyscraper sized building and you could supply any city with all the food it could need locally.

It probably could start to skew the market towards squatter plants as you say, but I can't see why most if not all of the things we grow now couldn't be viable. (doubly so if they ever nail the process of growing meat)

Totally true....but in all honesty, my car is so rusted that the entire body is really a crumple zone at this point, but not an engineered crumple zone.
The bronco is much taller/higher than the discovery in that vid, and much tougher, with 500%-1000% more bumper, but it only has lap belts, not even a shoulder strap, so in that situation if I don't drive up over them I'll probably take a steering wheel through the chest.
EDIT:The Jeep is even higher, so more likely to drive over anything, with no bumper, just protruding front tires to bounce off or pop, full 2.5" roll cage, and four point seat belts attached to the cage. It's safer than any normal car made today thanks to the add ons.

BUT, remember, the crumple zones work to decelerate BOTH cars in an accident, not just the car with the crumple zone, so as long as the car I hit has them, I'll be OK....maybe. My CAR will certainly survive better than the newer car, at least. ;-)

SRSLY.

The boy is 2" taller than me now at 13 years old!

yeah, they actually pretty much are. So underestimated, but they were what allowed the ever taller construction of buildings in modern cities.

Let's hope CPS doesn't get hold of this video.
It reminds me of my parents taking me down the double black diamond trail when I was 5. The moguls were taller than I was! After that, I had free reign to ski alone (also not smart). Today I'm sure that would not be allowed. Things sure were different 40 years ago.