With the underlying high performance infrastructure design, Meter charges a
minimum gas price instead of ranking transaction by gas price. Transactions are
ordered by the time the network receives them and will automatically expire if they are not
processed in 720 seconds.
Compare to traditional Byzantine Fault Tolerant (BFT) consensus, Meter's
implementation of HotStuff consensus gracefully handles consensus node and network failures
and therefore doesn't require a fully syncronized network. It makes network syncronization
techniques like Proof of History irrelevant.