The device doesn’t look like much: a caterpillar-sized assembly of metal rings and strips resembling something you might find buried in a home-workshop drawer. But the technology behind it, and the long-range possibilities it represents, are quite remarkable.
The little device is called a milli-motein — a name melding its millimeter-sized components and a motorized design inspired by proteins, which naturally fold themselves into incredibly complex shapes. This minuscule robot may be a harbinger of future devices that could fold themselves up into almost any shape imaginable.
Drown a Swiss Army knife and the robot, together.
Now try to slit your wrists with either one and report back on their viabilities.
My point is that sometimes the wheel can't be reinvented.