How do "rules" help scientists understand the world?

Because it can cause them to make educated guesses which will help them make logical conclusions later based off good evidence

Explanation:

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

it is the most commonly accepted one