it is an all new keyboard. As you move to a thinner design it took an entirely new kind of invention to make it, a beautiful keyboard. So the team studied how current keyboard technology works. Here's a slow motion video of a customer typing on a standard keyboard and as you see, as the keys get pressed they're a bit wobbly. In fact, if you press them on the side, they start to bottom out. That's because they're based on a mechanism called a scissor mechanism. And there was a time when that was great, but now there's something new. Our team invented a butterfly mechanism. This butterfly mechanism is built with a single assembly. And it's supported by a stainless steel dome switch. And that all adds up to a key that is much more precise and accurate. In fact, it's four times more stable than that scissor mechanism, yet is 40% thinner, allowing us to make a thinner keyboard. And we also make the key cap larger, make it even easier to strike and get a beautiful typing experience. So this is a slow motion video of typing on the keyboard, on the new MacBook. The keys are much more precise, much more accurate, even if you strike them on the side.