Imagine an alien army is on its way to earth, and they send a scout. You find the scout in your house and you lock it in and burn the house down. The military

Imagine an alien army is on its way to earth, and they send a scout. You find the scout in your house and you lock it in and burn the house down. The military finally shows up but they don't learn anything about the threat because you've burned all the evidence. Earth is still defenceless.