Dad, what is the alternative? – Vovochka, imagine, I give you $100, you buy 5 ch

Dad, what is the alternative?
– Vovochka, imagine, I give you $100, you buy 5 chickens. They lay eggs, there are more chickens, you have a farm… There was a flood and all the chickens drowned! Do you understand, son?
– No dad! What is an alternative?
– The alternative, son, is ducks!