Question

Which of the following is an example of foolproofing?

• A fire alarm that goes off when a fire is detected in a buiraing 
• A saw that will not start if the blade is not inserted properly in its housing
• A building that can withstand a major earthquake
• A colorful liquid laundry packet that resembles a piece of candy 

Answer 1

The correct option is b. A saw that will not start if the blade is not inserted properly as foolproofing saves against any mistake made by the user.