(October 28, 2015 at 5:12 am)pool Wrote: Imagine a motorcycle.
When we turn the accelerator the motorcycle moves forward.
Why does the motorcycle move forward?
The motorcycle moves forward because the motorcycle was designed to move forward when someone turn the accelerator.
Now imagine yourself.
When you walk forward you move forward.
Why do you move forward when you walk towards that direction?
We move forward when we walk towards that direction because we were designed to move forward when we walk towards that direction.
Designed by who? I honestly have no idea
You can relate this example with literally everything that happens in our daily life
See the Third Law here.