Could the SMD peg - and Bitshares peg's - be software versions of tensegrity? The structure never collapses, no matter how much pressure you put on it. Steem dollar has been stretched to $6 or even more without "without ultimately breaking or coming asunder". Compare this to NuBits, where one "impact" was enough to break the peg. SMD and NuBits were based on opposite principles. One is very rigid - until it breaks, and the other never breaks but yields under pressure - and returns when pressure stops.