<prompt> Human: i saw a thing about it online. How is buying a 20 pound of copper that has a melt price of 3 an investment? I mean Id buy one for the novelty of it but thats it  <response>: The idea behind investing in commodities is that they can appreciate over time since they are limited in quantity. They also hedge against inflation.That said - it should be left to those who know what theyre doing, which is not you. 