A consequence of a scarcity in cocaine supplies is that

If any drug gets run thin and the product isn’t being produced then the users will do anything and everything to get their product that they need, they crave their specific drugs and they will do whatever to the point of doing extremities to selling their kids, houses, robbing, etc. and that’s the just the users. Then if they can’t get their specific product they will go to a new drug. Such has heroine, meth, fetenal. Which will make the production of those drug grow. Then when those go away they will find stronger and stronger drugs to make to supply to the users, then they’ll be a new drug on the market. The “dealers” will make their price of the product go higher, so someone is going to have a lot of money in the end if they have the most of the product. And that can be damaging alone. And some dealers might want to keep their customers so they might rob or even kill other dealers for their product

Ican only answer your first question, a machine is like a human body because it's a little similar. they both almost work like the same.