Question:
Goal: How do I find new videos on Youtube

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Click on the side bar, then select "Trending"

Question:
Goal: how do you save a picture you took on your iphone?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
take the picture, and it stores to your albums automatically

Question:
Goal: How to find studs in a wall

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Move a magnet along a wall, when the magnet clings to the wall, its found a nail and you have found a stud.