But it's not a trick. It's a seamless way of being responsive. If it flashed a loading message every time an app was started, the user would know that their sel

But it's not a trick. It's a seamless way of being responsive. If it flashed a loading message every time an app was started, the user would know that their selection was registered by the phone, but the result would not be seamless like Apple's ingenious solution. A loading dialog that flashes on the screen for a second would be annoying, and the phone wouldn't be as good that way.