My contract is controlled by owner(s) who can decide to discharge the money from it. The owner also can assign another owner, set spending limits, etc.
Should the contract have one or several owners? If there is several owners, each owner could be able to do anything, including assigning another owner's right.
As a side note, it is likely that my contract would be controlled by another contracts, who would for example provide voting facility. There could be several voters, but only one voting comittee consisting of several voters. So, I assume it is enough to have only one owner, because it seems to make no sense to have several comittees for one contract. Good assumption?