I was reading Gavin Wood's polkadot paper and came across this:
"Tangle [17] becomes impractical."
How does byteball deal with arbitrary state changes?
Byteball has the ball its in the name, that is the global state, witnesses decide it. Witnesses decide ordering of units. This is not "the tangle" where developers decide the consensus with milestones and snapshots.
Witnesses do not decide ordering of units. Ordering is determined by the algorithm that looks back at the witnesses-authored units in the DAG.