Except that apparently they had such warnings for individual trades, but the bundle was implemented as "for(trade in bundle) transact(trade)". Which design has

Except that apparently they had such warnings for individual trades, but the bundle was implemented as "for(trade in bundle) transact(trade)". Which design has a certain appeal, standing on the shoulders of the peculiar handling of each trade, but with the terrible flaw that the bundle is never considered in its totality.