Imagine it is 1663, and you want to buy a dodo.
You are now legally allowed to buy a dodo. The Dutch, who manage the island of Mauritius as a colony, have no law against the purchase of dodos. Perhaps there once was such a law, and it’s now been suspended for a year.
If you have money, and you can find a willing seller, you can buy his dodo. You could even legally buy two. You could buy three or four. The Dutch government has just announced that it won't even try to stop you.
Want a dodo? Go ahead and buy one! Keep it as a pet, have it for dinner, we don’t care. Enjoy!
But there IS just one problem with this great and generous opportunity: There aren't any dodos left.