Gold is often touted for its high stock-to-flow ratio (i.e. total circulating supply divided by new yearly supply) and scarcity.

Gold's scarcity is dependent on many factors - mainly mining technological advancements that might make it easier to extract and newly discovered deposits. It's NOT absolutely scarce.

#Bitcoin, on the other hand, is programmed from the outset as an asset that IS absolutely scarce. Nothing and no one will be able to change its supply, making it the best savings technology.