Goal:
To bind fabric before putting it through a sewing machine.
Answer:
You should use small pins.

Goal:
how do you learn how to fight?
Answer:
fight other people.

Goal:
How to dice a potato quickly.
Answer:
Cut the potato in half and then into slices 1/4" or less. Take half of those slices and slice them the other way so they look like fries. Then chop the fries so that they become cubes.

Goal:
To make it easy to find your luggage at the airport carousel
Answer:
Tie a piece of brightly colored fabric to to your luggage.