T-Rex: You know what? We totally can put an exact price on life, down to the nearest cent.
T-Rex: In fact, we do it all the time!
T-Rex: Every time we land somewhere on the gradient between safety and expense, we do it. If a new ambulance costs $100,000 but would likely save at least 100 lives while it was in use, and we decide NOT to buy it, then we're saying those particular lives aren't worth $1000 each. Ouch! Sorry, ambulance dudes!
Utahraptor: But maybe we don't have the money to buy an ambulance anyway!
T-Rex: Sure! It's not a perfect measurement.
T-Rex: All I'm saying is we ESTIMATE it all the time. Heck, you do it whenever you're paid hourly and you speed into work! Divide the extra money you get by being there sooner by the increased chance of death the added speed brings you, and you've just VALUED YOUR OWN LIFE.
Utahraptor: ...I - I guess so!
T-Rex: On the flip side, whenever housecleaners clean a bathroom, they're PAID to kill the bacteria there! So those tiny lives are worth negative dollars. And there's SO MANY bacteria, Utahraptor!
T-Rex: There are like a decazillion of them I am ALMOST certain!