In US when school bus offload kids they have foldable stop sign where cars on both sides of the road must yeld to it.
https://i.ytimg.com/vi/3Qlh3VQp_YI/maxresdefault.jpg
Kids should cross the road IN FRONT of the bus and driver must wait for them to finish crossing.

I knew there was a valid reason for foldable rulers to exist.

Well, perhaps with currently available public domain parts, it's not possible. That doesn't mean it's completely impossible.
The flexible frame might be hard, but there ARE already wristbands that un-bend to make a flat device, they've been around for decades, I recall seeing one in the 90's. Making it support flight might be hard, but not impossible, especially with the small forces this thing provides.
You say there are already 2" square quads out there, this was closer to 18"square(6"X3"), so the 'it's just too small' argument falls flat.
Battery time might be a factor, but a 5 min video is pretty good for now, plenty to prove the concept. Also, battery life is increasing fast.
The camera and GPS in a phone hardly uses any battery power too. These tiny devices are really not hungry enough to make them a power drain problem, at worst they might limit flight time slightly. Also, there's no GPS needed really, it could operate by keeping the subject in frame at approximately the same distance...then it could just follow you through the trees, using the image to avoid obstacles. It would take some computing power, but not an outrageous amount. Perhaps it's paired with a cell phone to do the computing? That part wouldn't be hard.
Again, because the tech isn't available on the market today (and I'm not at all sure that's correct) doesn't mean the tech isn't available to some, or creatable by intelligent people. I just don't see this as that far away.
EDIT: The airdog seems like it's everything this wants to be, but large enough for a go-pro. I see no reason at all they couldn't miniaturize it all.
Flexable/foldable frame...check. Size issue...check. Battery life...irrelevant (so long as you get over 1 minute)...so check. What were the other 2 technologies you say don't exist?

Some notes:

* A lot of the tech by then should be voice-operated, using natural language. The idea of using palm-sized anything 10 years from now will seem ridiculous. If anything, screens will be flexible and foldable OLEDS.

* "They" are working on contact lenses with screens built in. The Augmented Reality glasses were probably closest to something useful.

* The tech is highlighting uses it defeats. Example: the idea of sending a meat-sack to another city across the world for a meeting seems ridiculous with the advent of holographic teleconferencing.

* Where is the pr0n?

Comment hidden because you are ignoring dag. (show it anyway)

They said the same thing about the iPhone - it's half a phone, half a music player, half an Internet device. By most people's standards that device has done pretty well.>> ^gwiz665:
To make a more precise critique of the iPad, I think it doesn't really know what it wants to do. It's half a phone, half a laptop, half a kindle, half a cintiq (well considerably less than half, but that's not a fair comparison) and not really aimed at anyone - or maybe rather, aimed at everyone. This is good for reading ebooks, webpages and so on, but so is a laptop. It is a (sorta) unique product so it might carve out what starts as a niche market and grows, lord knows apple are good at that, but I would think you can make better reader with E-ink or foldable/transparent OLED. I could be mistaken, of course.
Design wise it's hardly a revolution - it's a huge ipod touch with less features. That may be good enough, but I certainly don't want it - not at that price, anyway.

To make a more precise critique of the iPad, I think it doesn't really know what it wants to do. It's half a phone, half a laptop, half a kindle, half a cintiq (well considerably less than half, but that's not a fair comparison) and not really aimed at anyone - or maybe rather, aimed at everyone. This is good for reading ebooks, webpages and so on, but so is a laptop. It is a (sorta) unique product so it might carve out what starts as a niche market and grows, lord knows apple are good at that, but I would think you can make better reader with E-ink or foldable/transparent OLED. I could be mistaken, of course.

Design wise it's hardly a revolution - it's a huge ipod touch with less features. That may be good enough, but I certainly don't want it - not at that price, anyway.

In reply to this comment by syncron:
My apologies, I just copied the title from YT. There, fixed.

In reply to this comment by MarineGunrock:
Holy fail in the title.

Butterfly knife= foldable blade.

Hung ga= Chinese martial art.

More like "Huge fuckin knife vs. spear."

My apologies, I just copied the title from YT. There, fixed.

In reply to this comment by MarineGunrock:
Holy fail in the title.

Butterfly knife= foldable blade.

Hung ga= Chinese martial art.

More like "Huge fuckin knife vs. spear."

Butterfly knife= foldable blade.

Hung ga= Chinese martial art.

More like "Huge fuckin knife vs. spear."