ELI5: Explain Like I'm 5

AP Smith Manufacturing Co. v. Barlow

Okay, so imagine you have a toy car that you really love playing with. It's your favorite toy and you take it everywhere with you. One day, your friend borrows the car and accidentally breaks it. You get very upset and want your friend to buy you a new toy car, but your friend says they don't have to because they didn't mean to break it.

This is kind of like what happened in a court case called AP Smith Manufacturing Co. v. Barlow. The AP Smith Manufacturing Company was making things that were harming the environment, like smokestacks that were releasing polluted air. A man named Barlow sued the company to make them stop doing this and to make them pay for the damage they caused.

But the company argued that they didn't have to pay for the damage because they didn't mean to cause it. They said it was like your friend accidentally breaking your toy car - they didn't do it on purpose, so they shouldn't have to pay for it.

The court decided that the company DID have to pay for the damage they caused, even if they didn't mean to cause it. They said that if you do something that ends up hurting someone, even if you didn't mean to do it, you still have to take responsibility for your actions. This is called "strict liability" - it means that you are still responsible even if you didn't mean to cause harm.