The challenge: We have two eggs. How can we determine which egg is raw and which egg is hard boiled without breaking the egg's shell?

Explanation:

place it on its side and spin it. If the egg spins steadily, it’s hard-boiled; if it spins slowly or wobbles, it’s raw. If you can’t tell, stop the egg with your finger, then take your hand away. If the egg stays still, it’s hard-boiled; if it keeps rotating or wobbling, it’s uncooked.

the declaration states, “we hold these truths to be self-evident, that all men are created equal, that they are endowed by their creator with certain unalienable rights, that among these are life, liberty, and the pursuit of happiness….”