Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion
the problem with beetcoin [sic] is [..] that you don't know if you have enough money with you to be able to get off the bus, because, unlike a bus, beetcoin [sic] doesn't ask for your fare to get on. It lets you on, but if you don't have enough change on you? Have fun riding the bus. For the rest of your life 
Dynamic fees predict fare based on current demand. If demand increases in the interim from boarding to alighting, then RBF gives you the option to increase your fare. These mechanism mitigate the problem by and large.