I'd love for this to exist, being a hater of needles. But it seems a bit odd to say:
"""The new injector has yet to be tested on people, but has been used on animals, like sheep, without apparent discomfort. "The sheep did not seem to even be aware that they were being injected," Hunter says"""
Are sheep not herd animals that almost never show discomfort or pain? Something to do with not wanting to get picked off by predators? I've never seen a sheep act hurt. I've even seen one get its back broken by a horse and it just lay there like it was fine.
They will still flinch when you poke them. Reactions to chronic discomfort may be hidden, but acute pain still causes a reaction (note: this is from my experience growing up in the fields around farm animals. I've not tried a controlled experiment, nor do I know of one :)
I sort of hope you’re right because the idea of a technology that could inject things into people without them even knowing freaks me out a little bit.
One solution to this problem would be to regulate the injectors so that they had to put a mild, distinctive kind of pressure on your skin as they injected into it.
Not a scientific account, exactly, but I seem to recall from reading James Herriot that some animals just do not care about injections, at all. Same with (IIRC) some cows and dogs, at least. This new device sounds cool, but I'm not confident it doesn't hurt.
"""The new injector has yet to be tested on people, but has been used on animals, like sheep, without apparent discomfort. "The sheep did not seem to even be aware that they were being injected," Hunter says"""
Are sheep not herd animals that almost never show discomfort or pain? Something to do with not wanting to get picked off by predators? I've never seen a sheep act hurt. I've even seen one get its back broken by a horse and it just lay there like it was fine.