Question:
Goal: How to boil liquid?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
heat liquid til bubbles rise constantly to the surface

Question:
Goal: To open a can of cherry pie filling,

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
using a can opener, place the lip of the can between the two blades and squeeze the handles, then twist until the edge is completely cut.

Question:
Goal: To learn to dance.

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Put your type of dance instructional videos on youtube, watch and practice.