Amorphic metal has been a goal of manufacturers for decades if not longer. Metal tends to fail where crystals intersect. If you cool a metal down fast enough, metals don't form crystals. The problem is, even if you drop molten metal into liquid nitrogen, the outside cools fast enough to be amorphic, however, the inside remains flawed. The only solution before Liquid Metal was to make very thin strips of laminated metal, then glue them together. (This was suboptimal.)
Liquid Metal is one of the coolest inventions in the last 100 years. I hope they can get the production speed up to something useful. (I would be willing to bet, production speed is the reason Apple has not used them for anything significant yet.)
Hmm, well I'm willing to be educated. However, people are discussing making laptops out of this stuff and I would like to point out that aluminum laptops are already very thin and also very strong. Yes, they scratch and could even dent. But the metal bodies certainly don't "break" and the form is rigid enough.
And getting production speed up and cost down is more than just a hurdle. It is the whole game when we are talking about consumer devices that Apple wants to sell in the millions.
The sim extraction tool did not seem to me an appreciably better technological feat than the common needle that people have sewn with for thousands of years. Making hard, thin metal objects was, I thought, something we already had nicely worked out.