Dustin Curtis says:

For example, as a designer, it seems to me that many egregious errors were made in the fundamental design of Android’s presentation layer. On all major competing platforms, scrolling performance is given priority over other tasks by the operating system and is accelerated by the GPU. This is important because the interfaces on touch screen devices are treated as tangible, physical objects by the human brain. When a physical action you make with your finger does not lead to the response your brain has learned to expect in the physical world, something feels very wrong. It doesn’t feel genuine.

http://dcurt.is/nothing-makes-sense